OAE 018 and 019

a. -2x+(4/3)

** -3y=6x-4 ** In the equation above, y is equal to which of the following? a. -2x+(4/3) b. 2x + (4/3) c. -2x-(4/3) d. 2x-(4/3)

c. circle graph

A botanist is surveying a population of a plant species. Plants of this species produce white, red, or yellow flowers. Which of the following graphic representations of data would best illustrate the proportion of each color of flower compared to the total population of flowers? a. pictograph b. line graph c. circle graph d. Venn diagram

c. 25/325 = x/30

A car's gas mileage averages 25 miles per gallon in the city and 30 miles per gallon on the highway. The car can travel 325 miles on a tank of gas in the city. Which of the following proportions can be used to determine how many miles the car can travel on the highway using the same amount of gas? a. 25/325 = x/30 b. 25/55 = x/325 c. 25/325 = 30/x d. 25/55 = 325/x

c. are made up of cells

A characteristic of living organisms that distinguishes them from nonliving things is that living organisms: a. change in shape over time b. have a carbon-based chemistry c. are made up of cells d. are capable of performing work

d. 332 square feet

A homeowner wants to carpet the shaded portion of the room shown in the floor plan below. Calculate the area in square feet of the shaded portion of the room. a. 380 square feet b. 356 square feet c. 348 square feet d. 332 square feet

c. using social skills to resolve conflicts constructively

A librarian reads to six-year-olds about two friends who argue and end up in a minor fight. Saying that arguments are normal, the librarian helps the group discuss ways to prevent arguments from becoming fights. An excerpt of the list is as follows: - Do not yell or hit. - Listen to the other person - State the main problem - Work out an agreement This activity is particularly appropriate for introducing children to which of the following types of life skills? a. using active listening skills to clarify a speaker's intent b. developing resistance skills to maintain personal safety c. using social skills to resolve conflicts constructively d. developing assertiveness skills to resist negative peer pressure

b. a small group of rodents is cut off from the rest of the rodent population by a large lava flow

A new species of rodent would be most likely to evolve under which of the following circumstances? a. A population of rodents expands its range northward as the climate changes. b. a small group of rodents is cut off from the rest of the rodent population by a large lava flow c. several members of a rodent r=population are displaced from their habitat by a construction project d. a contagious viral disease kills off all of the newborn rodents in a population over a six-month period

c. c ≤ 3

A parent has purchased enough juice for each child at a birthday party to have at most three cups. Which of the following expressions represents c, the number of cups of juice each child could have? a. c ≥ 3 b. c > 3 c. c ≤ 3 d. c < 3

a. c= 50 + 30(h-1) + 15h

A plumber charges $50 for the first hour of her time and $30 for every hour after that. She charges $15 per hour for her helper. If h represents the number of hours the plumber and her helper worked, which of the following equations can be used to calculate c, the total cost of a plumbing job? a. c= 50 + 30(h-1) + 15h b. c= 50 + (30 + 15)(h - 1) c. c= 50 + 45h d. c = 65 + 30h

d. angles of a triangle

A protractor is the most appropriate tool for measuring the: a. volume of a cube b. area of a rhombus c. diameter of a circle d. angles of a triangle

d. 3/4(6) + 2/3)24) + 3/4(8)

A store is having a sale on the items shown in the table below. A shopper wants to estimate the cost of purchasing two pairs of socks, one pair of pants, and one t-shirt. Select the expression that would give the best estimate of the total cost of the purchase in dollars. a. 1/4(3 +24 + 9) b. 1/4(3) + 1/3(24) + 1/4(8) c. 3/4(6 + 24+ 9) d. 3/4(6) + 2/3)24) + 3/4(8)

a. 1

How many lines of symmetry does this shape have? a. 1 b. 2 c. 3 d. 4

a. I

If the line in the graph below is rotated 90° counterclockwise about the origin and then reflected across the y-axis, in what quadrant will the line be? a. I b. II c. III d. IV

d. 2

In a row of 2 houses, the first house and every third house after they have blue shutters. Beginning with the second house, every fourth house has a blue door. Out of the 24 houses, how many have both blue shutters and a blue door? a. 5 b. 4 c. 3 d. 2

a. b/w = 5/2

In a school, there are 5 children who ride the bus to school for every 2 children who walk to school. If b represents the numbers of children who ride the bus and w represents the number of children who walk, which of the following equations represents the relationship of the number of children who ride the bus to the number of children who walk? a. b/w = 5/2 b. b/w = 2/5 c. b = 2w + 5 d. b = 5w + 2

a. feedback in a system

In humans, the evaporation of perspiration helps a person who is exercising maintain a constant internal body temperature. In Earth's processes, melting sea ice exposes darker water below it, which absorbs more heat and causes more ice to melt. These two examples illustrate which of the following themes in science? a. feedback in a system b. order and organization c. conservation of energy d. form and function

a. a biologist wants to see the pattern of change in the oxygen levels of a lake that were recorded each month for a year.

In which of the following situations would a line graph be the most appropriate type of graph for representing the data? a. A biologist wants to see the pattern of change in the oxygen levels of a lake that were recorded each month for a year. b. A sales manager wants to compare the sales figures of four regional offices for one month. c. A meteorologist wants to determine the percent increase in rainfall from one year compared to the previous year. d. A bookstore owner wants to display the number of each category of book sold during a special sale.

d. the cart should be released from the same height on the ramp for each trial

Investigators are planning an experiment to determine if changing the mass of a toy cart influences how far it will travel across the floor after rolling down a ramp. Which of the following guidelines will be most important for the investigators to follow when conducting this experiment? a. The longest distance the cart travels at each mass should be the value recorded for later analysis b. the alignment of the wheels of the cart should be checked and adjusted if necessary between each trial c. the distance the cart travels across the floor should be measured by the same person for each trial d. the cart should be released from the same height on the ramp for each trial

c. 3r + 8 = 2s +6

Regina and Sam are runners. Each week, Regina runs on Monday, Wednesday, and Friday, and Sam runs on Tuesday and Thursday. In addition, each weekend Regina runs 8 miles, and Sam runs 6 miles. Regina runs the same number of total miles each week as Sam runs. If r and s represent the number of miles that Regina and Sam run each weekday respectively, which of the following equations represents the relationship between r and s? a. r = 3s+8-6 b. s = 2r+8+6 c. 3r+8 = 2s+6 d. 2r+8 = 3s+6

a. 2/3 x 1/2 = 2/6

Select the equation that is modeled by the diagram below a. 2/3 x 1/2 = 2/6 b. 4/6 ÷ 1/2 = 4/3 c. 1/2 - 1/3 = 1/6 d. 2/3 + 1/6 = 5/6

b. (4+5)/2

Select the expression that represents the median of the data below. 4, 5, 8, 3, 7, 3, 1, 6 a. 38/8 b. (4+5)/2 c. 8-1 d. 3+3

a. mutualism

Termites rely on protozoans living in their digestive tract to digest the cellulose present in wood. In exchange, the protozoans have access to an ample supply of nutrients. This is an example of which of the following types of relationships? a. mutualism b. commensalism c. parasitism d. competition

b. higher average annual temperatures

The figure above shows the path of the Gulf Stream as it moves across the Atlantic Ocean and forms the North Atlantic Drift. The presence of this ocean current and prevailing winds that blow from the ocean to land explains why, compared to other regions of similar latitudes, the climate of northwestern Europe has: a. more days with temperatures below freezing b. higher average annual temperatures c. a much shorter and cooler summer season d. less total annual precipitation

c. 1/6 x 2/6

The sides of a six-sided cube are painted with the colors shown in the table below. Select the expression that can be used to determine the probability that if the cube is rolled twice, it comes up first green and then yellow. a. 1/6 + 2/6 b. 1/12 + 2/12 c. 1/6 x 2/6 d. 1/12 x 2/12

a. harmony

The simultaneous playing of two or more musical notes creates which of the following elements of music? a. harmony b. rhythm c. dynamics d. melody

d. 27

The table below shows the input and output values for a function. Determine the output of the function when the input is equal to 5. a. 16 b. 22 c. 25 d. 27

c. converting atmospheric nitrogen into a form usable by plants

What is the primary role of nitrogen-fixing bacteria in the cycling of nitrogen through the environment? a. degrading nitrogen compounds present in animal feces b. releasing nitrogen from proteins in dead plant material c. converting atmospheric nitrogen into a form usable by plants d. returning nitrogen gas to the atmosphere

b. 2⁴ x 3²

What is the prime factorization of 144? a. 2 x 3 b. 2⁴ x 3² c. 4 x 2² x 32 d. 3 x 4 x 6 x 2

b. kicking a stationary ball toward a partner or target while standing still

When providing initial coaching to young children in how to kick a ball, which of the following activities should be introduced first? a. holding a ball with two hands and attempting to punt it into the air b. kicking a stationary ball toward a partner or target while standing still c. running toward a stationary ball and kicking it toward a hoop target d. using foot taps to dribble a ball around plastic cones

c. external gills

Which of the following anatomical features would be present in a newly hatched tadpole that is in stage 2 of the frog life cycle shown above? a. internal lungs b. four legs c. external gills d. three-chambered heart

c. The light waves of different frequencies bend at different angles

Which of the following best describes how a rainbow is produced when sunlight passes through a glass or acrylic prism? a. The frequencies of the light waves are increased b. Only some of the components of the light are reflected c. The light waves of different frequencies bend at different angles d. The colors present in the light are absorbed to varying degrees

d. an improvisational modern dance

Which of the following dance forms is most suited to performers who want to explore and express personal feelings? a. an ensemble tap dance b. a square dance c. a classical ballet d. an improvisational modern dance

d. modeling the environmental impact and offering possible solutions

Which of the following describes the primary role science is playing in addressing the issue of global warming? a. determining how much federal grant money will be spent on research b. working to pass state laws limiting the emissions of carbon dioxide c. lobbying car manufacturers to produce more hybrid automobiles d. modeling the environmental impact and offering possible solutions

a. oil pastel

Which of the following drawing media is the most suitable for blending colors? a. oil pastel b. pencil c. marker d. wax crayon

d. y = 3x + 3

Which of the following equations represents a linear function? a. y = 2/x b. y = x³ c. y = x² + 4 d. y = 3x + 3

b. 20(1,000)(100)

Which of the following expressions can be used to determine the number of centimeters in 20 kilometers? a. 20(100)(10) b. 20(1,000)(100) c. 20/(100)(10) d. 20/(1,000)(10)

a. Scientific investigations are based on observations and questions

Which of the following is a fundamental principle of science? a. Scientific investigations are based on observations and questions b. scientific models are developed before starting an experiment c. scientific theories that have been accepted are deemed absolute truths d. scientific results not supporting a hypothesis should be ignored

d. a metal shovel develops rust spots after being left out in the rain

Which of the following is an example of chemical change? a. a chocolate bar left in the sun melts in its wrapper b. a teaspoon of salt is dissolved in a pot of hot vegetable soup c. a puddle of water evaporates over the course of a day d. a metal shovel develops rust spots after being left out in the rain

b. the handle of a soup ladle gets hot while hot soup is being served

Which of the following is an example of energy being transferred by conduction? a. wet mittens hung near a roaring fire become warm and dry b. the handle of a soup ladle gets hot while hot soup is being served c. the temperature of pool water increases on a sunny day d. air heated by an electric space heater circulates around a cold room

d. mandating the recycling of aluminum products

Which of the following is the most economically sensible strategy for managing the growing demand for aluminum? a. building more aluminum processing plants b. manufacturing a synthetic form of aluminum c. exploring the seafloor for potential aluminum ore deposits d. mandating the recycling of aluminum products

b. cymbals

Which of the following musical instruments is part of the percussion section of an orchestra? a. bassoon b. cymbals c. double bass d. harp

a. 0.021

Which of the following numbers is closest in value to 2.5 x 10^-2? a. 0.021 b. 2.3 c. 2/10 d. 22/100

b. making a chart

Which of the following problem-solving strategies would be most appropriate for solving the problem shown below? *Four children sitting at at a table are all wearing shirts of different colors - blue, red, green, and tan. Jared is wearing a blue shirt. Lucy is not wearing a red or a tan shirt. Corinna is wearing either a red or a tan shirt. Pablo is wearing either a blue or a tan shirt. What color shirt is Lucy wearing? a. working backward b. making a chart c. finding a pattern d. setting up an equation

b. applying heat and pressure to igneous rock

Which of the following processes can form metamorphic rock? a. weathering sedimentary rock b. applying heat and pressure to igneous rock c. melting sedimentary rock d. cooling magma below Earth's surface

b. Are the last two digits a number that is divisible by 4?

Which of the following questions can be used to determine whether a number with four digits is divisible by 4? a. Is the last digit divisible by 4? b. Are the last two digits a number that is divisible by 4? c. Is the sum of the last three digits divisible by 4? d. Is the sum of all the digits divisible by 4?

b. {(-2, 6), (1, 3), (2, 6), (4, 18)}

Which of the following sets of ordered pairs describes a function? a. {(-1, -4), (-2, -8), (-1, 4), (-2, 8)} b. {(-2, 6), (1, 3), (2, 6), (4, 18)} c. {(0, 1), (0, 2), (1, 1), (1, 2)} d. {(3, 6), (3, 9), (3, 12), (3. 15)}

d. When analyzing the results of a scientific investigation, a scientist uses only the data that support this hypothesis

Which of the following situations is an example of a scientist exhibiting bias during a scientific investigation? a. After running two trials of an experiment with different outcomes, a scientist then has a colleague repeat the experiment b. A scientist measures the effect of more than one variable at a time when conducting a scientific investigation c. A scientist does not report the results of her investigation when she realized that the techniques were flawed d. When analyzing the results of a scientific investigation, a scientist uses only the data that support this hypothesis

d. anticipated pressure situations so that they can find ways to handle or avoid them

Which of the following techniques would be most effective for preadolescent students to use in resisting offers to try drugs? a. making a pact to alert their friends about any offers to try drugs b. reporting any rumors of drug use to the school administration c. learning which students sell drugs so that they can avoid them at school d. anticipating pressure situations so that they can find ways to handle or avoid them

a. body covered in fur

Which of the following traits, if shared by two different types of organisms, would indicate the closest taxonomic relationship between the organisms? a. body covered in fur b. presence of a spinal cord c. wings used for flight d. oxygen required for cellular metabolism

c. pattern blocks

Which of the following types of manipulatives is most appropriate for investigating and finding relationships between fractions? a. number cubes b. geoboards c. pattern blocks d. tangrams

d. carbon dioxide

X + water + energy from sunlight ---> glucose + oxygen In the simplified equation for photosynthesis shown above, x represents: a. nitrogen b. sodium chloride c. sucrose d. carbon dioxide

b. heating the nail over a flame

an iron nail can be magnetized by rubbing it with the end of a permanent magnet. Which of the following can cause the nail to become demagnetized? a placing the nail near an electric field b. heating the nail over a flame c. cutting the nail into two pieces d. using the nail to pick up metals