POSTTEST: math

2(-3 + 3x) < 3 - 4(2x + 1) solve the inequality above. what is the value of x? a. x > 5/14 b. x < 13/14 c. x < 5/14 d. x < -1

x < 5/14

| 2x - 3 | = 3 solve the equation above. what is the value of x? a. x = 3 b. x = 0, 3 c. x = 0 d. x = 6

x = 0, 3

23 + 33 + 44 + 51 + 31 using the front-end estimation, what is the correct estimation of the above sum? a. 270 b. 170 c. 182 d. 160

170

a baker needs 3/4 cup sugar to make 12 brownies. how much sugar does the baker need to make 40 brownies? a. 2 1/2 cups b. 2 1/4 cups c. 3 cups d. 4 cups

2 1/2 cups

what is the mode of the following series of numbers? 3 ,15, 9, 17, 14, 8, 3, 25, 10, 22 a. 12.6 b. 12 c. 3 d. 22

3

three students have a circular pizza divided in 11 slices of equal size. if they each eat one slice, what fraction of the pizza has been eaten? a. 8/11 b. 3/11 c. 3/8 d. 5/8

3/11

an entrepreneur sells 1/2 of her company to one buyer and /6 to another buyer. what percent of the company does she have left? a. 33 1/3% b. 8 1/3% c. 92% d. 66 2/3%

33 1/3%

the number of bushels (B) of a crop directly as the number of acres (A) of the field in which it is planted. a 3.5-acre plot of land produced 121 bushels of the crop. which of the following is the equation of variation? a. B = 0.0289 A b. B = 34.57A c. B = 423.5A d. B = 124.5A

B = 34.57A

a sales associate at a car dealership makes a 12% commission on the selling price of every car she sells. in one morning, she sold two cars worth $4,000 and $7,500. which of the following values represents the amount of commission the sales associate earned? a. $1,380 b. $420 c. $1,150 d. $900

$1,380

a parent plans to divide 8/9 of $27 equally among his four children. how much money will each child receive? a. $6.75 b. $24 c. $6 d. $96

$6

a shopper receives 25% off of his total purchase, resulting in a discount of $2.25. what was the original purchase price? a. $2.81 b. $9.00 c. $11.25 d. $10.00

$9.00

four plus three times a number is twice the number. what is the number? a. -4/5 b. -3/2 c. 0 d. -4

-4

which of the following places the values below in order from least to greatest? -5, -4.99, -5.01, -5.001, -5, -5.1 a. -5.1, -5.01, -5.001, -5, -4.99 b. -4.99, -5, -5.001, -5.01, -5.1 c. -5.1, -5, -5.01, -5.001, -4.99 d. -4.99, -5.001, -5.01, -5, -5.1

-5.1, -5.01, -5.001, -5, -4.99

which of the following is 5/6 + 3/4? a. 8/12 b. 8/10 c. 1 9/12 d. 1 7/12

1 7/12

in a high school with 3,775 students, 40% are girls and the remainder are boys. how many boys and girls go to the high school? a. 1,877 girls; 1,898 boys b. 94 girls; 3,681 boys c. 944 girls; 2,831 boys d. 1,510 girl; 2,265 boys

1,510 girl; 2,265 boys

which of the following is the quotient of 0.4375 divided by 0.35? a. 0.8 b. 125 c. 1.25 d. 0.0125

1.25

what is the mean of the following series of numbers? 22, 15, 17, 65, 75, 23 a. 22.5 b. 36.17 c. 43.4 d. 33.33

36.17

a drink recipe calls for 2 L pink lemonade, 1 L cranberry juice, and 1.5 L lemon-lime soda. how many mL of the drink would this recipe make once the three liquids are mixed together? a. 45 mL b. 4.5 mL c. 4,500 mL d. 45,000 mL

4,500 mL

the dimensions of a living room are 18 feet by 24.5 feet. if the dimensions of the room are rounded to the nearest whole foot, which of the following products would be the best estimate for the area of the room? a. 400 ft^2 b. 441 ft^2 c. 450 ft^2 d. 500 ft^2

450 ft^2

which of the following is the correct symbolic representation of the statement below? thirty less than four times a number is greater than two a. 30 - 4n < 2 b. 30 - 4n > 2 c. 4n - 30 < 2 d. 4n - 30 > 2

4n - 30 > 2

which of the following fractions represents 5.75 written in simplified fraction form? a. 575/100 b. 5 7/10 c. 4/23 d. 5 3/4

5 3/4

which of the following is the sum of the values below? 413.403, 4.12356, 4193.48, 95.631, 4.1284, 786.47 a.5,497.22596 b. 4,275.02596 c. 14,606.69 d. 5,497.12596

5,497.12596

which of the following lists the values below in decreasing order? -12, √7, 5.3, -7/3, -√14, 4 2/3 a. -√14, -12, -12, √7, 5.3, 4 2/3, -7/3 b. 5.3, 4 2/3, √7, -12, -√14, -7/3 c. -12, -√14, -7/3, √7, 4 2/3, 5.3 d. 5.3, 4 2/3, √7, -7/3 , -√14, -12

5.3, 4 2/3, √7, -7/3 , -√14, -12

the boeing 707 was boeing's first jet airliner and was produced beginning in 1958. it covered 2,280 miles in 4 hr, on average. what was its average speed (its average unit rate)? a. 570 mph b. 9,120 mph c. 0.0018 mph d. 176.75mph

570 mph

the sum of two unequal numbers is 72, and their difference is 46. what are the two numbers? a. 59, 13 b. 46, 26 c. 62, 16 d. 60, 12

59, 13

a meteoroid travels at a speed of about 45,000 mph. what is the meteoroid's speed in feet per second? (1 mil = 5.230 feet and 1 hr = 3,600 seconds) a. 66,000 feet/second b. 855,360,000,000 feet/second c. 237,600,000 feet/second d. 30,682 feet/second

66,000 feet/second

3(5 - 2x) = 7 - 2 ( + 3) solve the equation above. what is the value of x? a. 5/4 b. 7/2 c. 1/2 d. 1f

7/2

the local forecast indicates that tomorrow's temperature will be 35℃. which of the following is the approximate equivalent in degree fahrenheit? a. 1.7℉ b. 95℉ c. 51.4℉ d. 70℉

95℉

a bivariate data set is graphed on a scatter plot. as the independent variable increases, the dependent variable decreases. which of the following types of correlation, if any, exists between the variables? a. positive b. negative c. positive and negative d. no correlation

negative