Algebra STAAR

Solve Which expression is equivalent to 28x^2+35x

CHEAT IN DESMOS 1). Graph the given 2). Graph the answer choices 3). Fine the answer choice that has the exact same graph as the given

The graph shows the linear relationship between the maximum area in square feet that can be painted and the number of gallons of paint used Which of these best represents the rate of change of the maximum area painted with the respect to the number of gallons of paint used

Step: 1). Find the slope (rise over run)

Which expression is equivalent to (h^2+9h-1)(-4h+3)

Steps 1). Change H to X 2). Graph in desmos 3). Graph answer choices in Desmos and find which ones match up

There are 1,024 players in a tennis tournament. In each round half of the players are eliminated. Which function can be used to find the number of players remaining in the tournament at the end of x rounds.

Steps 1). Determine whether it is a growth or decay problem 2). Use Desmos: graph, settings, convert to table

The value of y varies directly with x. If x=3 then y=21. What is the value of x when y=105

Steps 1). Divide y# by common variable to find x value

Which graph best represents the solution set of -4x is less than or equal to 6y-54

Steps 1). Eliminate lines that don't match 2). Remember left hand=less than

In a sequence of numbers a,3=0 a,4=6 a,5=18 a,6=18 and a,7-24. Based on this information, which equation can be used to find the nth term in the sequence a,n

Steps 1). Find the pattern 2). Plug in the pattern number to find the nth term

Solve Which expression is equivalent to (144k^2r^14)^1/2

Steps 1). Formula chart: exponent rules 2). Distribute outside power to each coefficient 3). Simplify number to power with calculator 4). Simplify power to power by multiplying exponents

The graph of g)x)=x^2 was transformed to create the graph of h(x)=-(x/4)^2 which of these describes the transformation fro the graph of g to the graph of h

Steps 1). Graph in desmos 2). Evaluate the graph and the answer choices

What appears to be the domain of the part of the exponential function graphed on the grid

Steps 1). Identify that domain is x value and evaluate the graph

The water level of a river was measured each day during a two week period. The graph models the linear relationship between the water level of the river in feet and the number of days the water level was measured Which statement best describes the y-intercept of the graph

Steps 1). Just look at the graph and decide which one lines up with the answer choices

Two customers went to a post office to buy postcards and large envelopes. Each postcard costs the same amount, and each large envelope costs the same amount. The first customer paid $12 for 14 postcards and 5 large envelopes The second customer paid $24.80 for 10 postcards and 15 large envelopes What was the cost in dollars of each large envelope

Steps 1). Label one item x and one item y 2). Write 2 equations 3). Put both equations into y= 4). See where they cross in Desmos 5). Interpret poijnt based off of step one

What is the equation in slope intercept form of the line that passes through the point (2,-2) and is perpendicular to the line represented by y=2/5x

Steps 1). Opposite the reciprocal slope 2). Change sign 3). flip the fraction

What is the solution set for 4x+10 is greater than or equal to 5x+55

Steps 1). Solve it like it's an equation 2). if you divide by a negative you need to flip your sign

In the year 1900, the total number of metric tons of copper produced in the world was 495000. Each year since 1900 the total number of metric tons of copper produced has increased on average by about 3.25% over the amount produced the previous year. Which function models the total number of metric tons of copper produced in the year that is x years since 1900

Steps 1). identify if it is a growth or decay problem 2). Move decimal over for percentage

Which graph best represents a quadratic function that has only one zero

Steps 1). one zero means one x-intercept

What is the x-value of the solution to this system of equations

Steps 1). solve each system 2). Graph in desmos

A paper airplane was thrown from the top of a tall building. The height of the paper airplane above the ground can be found using the function y=-1.5x+60where x is the time in seconds the airplane has been in the air. How many seconds did it take the paper airplane to reach the ground?

Steps 1). use the equation to find the answer 2). Identify the height and time and whichever is time is the answer

What is the slope of the line that passes through the points (5,-11) and (-9,17)

Steps 1). use the picnic table method 2). Stat, edit, stat, calc, linreg to find answer

What are the domain and range of f(x)=37

Steps 1).Know that domain is x and range is y 2). Graph in Desmos to check

Solve What is the rang of y=x^2x+3

Steps Graph in Desmos and analyze the answer choices

Solve Which statements about the graph of y=8(0.25)^x is true?

Steps Graph in Desmos and analyze the answer choices

Solve At a restaurant jars of tomato sauce are stored in boxes in the party. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes. Which function shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry, and x, the number of boxes in the pantry?

Steps: 1). Define x and y and put them in the right spots

The graph of quadratic function P is shown on the grid If k(x)=x^2 and p(x)=k(x)+n what is the value of N

Steps: 1). Identify that N is the y intercept

Scientists are studying a bacteria sample. The function f(x)=245(1.12)^x Gives the number of bacteria in the sample at the end of x days Which statement is the best interpretation of one of the values in this function

Steps: 1). Identify the initial 2). Identify growth and decay 3). Evaluate the answer choices

The graph of 2x-5y=10

Steps: 1). Put into y= 2). Plot all of the given points and find which one goes on the line

A zookeeper recorded the feeding schedule for a baby rhinoceros for 20 weeks. The table and scatterplot show the percentage of the baby rhinoceros's body mass that was used to determine the amount of food given at each feeding as a linear function of it's age in weeks What is the best perdiction of the percentage of the baby rhinoceros's body mass that should be used to determine the amount of food given at each feeding when it's 25 weeks old?

Steps: 1). Put the table into calculator using: STAT, Edit, STAT, CALC, linreg 2). Get equation and plug 25 in for x to solve

The graph of a linear function is shown on the grid

Steps: 1). put all the answers in y- 2). find which one is the same as the given

The tables of ordered pairs represent some points on the graphs of lines q and v

Steps: 1). Convert to y= 2). Use desmos: graph, settings, convert to table

The graphs of linear functions f and g are shown on the grid Which function is best represented by the graph of g

Steps: 1). Graph all equations and match to the original graph

Solve What value of N makes the equation 4(0.5-3)=n-0.25(12-8n) true

Steps: CHEAT IN DESMOS 1). Change N's to X's 2). y= left side of equation 3). y= right side of equation 4). see where they cross in Desmos 5). Chose the x value

The area of a rectangular trampoline is 112 ft^2. The length of the trampoline is 6ft greater than the width of the trampoline. This situation can be represented by the equation w^2+6w-112=0

Steps: CHEAT IN DESMOS 1). y=right side y= left side 2). Find the answer

Which statement about g(x)=x^2-576 is true

Steps: GRAPH IN DESMOS

Given f(x)=1/3(4-x)^2 what is the value of f(16)?

Steps: GRAPH IN DESMOS 1). Graph in Desmos and convert to table 2). What is y when x=18

What are the solutions to (x+7)^2=81

Steps: GRAPH IN DESMOS 1). y= right side and y= left side 2). Find x-intercepts

The graph shows the height in feet of an object above the ground T seconds after it was launched from the ground Which function is best represented by the graph of this situation

Steps: USE DESMOS 1). Graph all the answer choices 2). Match answer choice graph to provided graph

Which expression is equivalent to x^2-17x-60

Steps: USE DESMOS 1). Graph given 2). Graph answer choices 3). Match it up

Which function is equivalent to f(x)=-4(x+7)^2-6

Steps: USE DESMOS 1). Graph given in desmos 2). Graph answer choices in desmos 3). find which ones match up

What is the solution to 34x+95=3(14x+9)

Steps: USE DESMOS 1). Y= left side and y=right side 2) see where lines cross and put use x value as answer

Which expression is a factor of 21x^2+13x-20

Steps: USE FACTOR BY GROUPING

What are the equation and slope of the line shown on the grid

Steps: USE HOY VUX

Which expression is a factor of 9r^2-4r+1

Steps: Use factor by grouping