Keystone Practice Questions

A bookstore manager will randomly select 1 of 5 newly arrived fiction books and 1 of 4 newly arrived nonfiction books for a window display. What is the probability that the manager will select the shortest of the newly arrived fiction books and the longest of the newly arrived nonfiction books?

• A. 5%

• B. 10%

• C. 20%

• D. 45%

Tags

CCSS.HSS.CP.B.9

Vaughn surveyed 9 classmates. He asked each classmate for the number of days in the previous week that he or she had eaten fruit and the number of days that he or she had exercised. What is the median number of days that the 9 classmates exercised last week?

• A. 2

• B. 3

• C. 4

• D. 5

Tags

CCSS.6.SP.B.5C

Dion has two bunches of similar bananas. One bunch has 8 bananas, and the other bunch has 9 bananas. The list below shows the weight, in grams, of each of the bananas in the bunch of 8: 138, 118, 121, 164, 140, 115, 129, 123. Which measurement is most likely closest to the total weight of the bunch of 9 bananas?

• 932 grams

• 1,048 grams

• 1,179 grams

• 1,368 grams

Tags

CCSS.5.MD.A.1

The list below represents the number of novels written by each of Amir's 10 favorite authors: 1, 3, 3, 4, 5, 7, 8, 10, 12, 23. What is the interquartile range of the number of novels written by each of Amir's 10 favorite authors?

• 3

• 6

• 7

• 22

Tags

CCSS.6.SP.B.5C

A line is graphed on the coordinate plane shown below.

• The line has a slope of 2 and a y-intercept of -4.

• The line has a slope of 2 and a y-intercept of -2.

• The line has a slope of 1/2 and a y-intercept of -4.

• The line has a slope of 1/2 and a y-intercept of -2.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the equation of the line that passes through the points (2, 4) and (6, 2)?

• y = 0.25x + 4.5

• y = 0.25x + 0.5

• y = -0.25x + 14

• y = -0.25x + 3.5

The equation 3x + y = 8 describes a function of x. Which graph represents the function?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write and solve a system of equations that models the number of small baskets (x) and the number of large baskets (y) that a customer purchases when they buy a total of 8 baskets of tomatoes and pay $36. Show or explain all your work.

Tags

CCSS.8.EE.C.8C

Use a system of equations to describe another customer's purchase of 10 baskets of tomatoes for $45, and explain why the claim is incorrect.

Tags

CCSS.8.EE.C.8C

April is purchasing bottles of orange juice and bottles of apple juice from the store. She will buy no more than 6 bottles of juice and will spend no more than $10.00. Each bottle of orange juice costs $3.75, and each bottle of apple juice costs $1.25. Refer to the graph for the situation where x represents bottles of orange juice and y represents bottles of apple juice. Which statement describes all possible solutions where x = 2?

• April will purchase 2 bottles of orange juice and 4 bottles of apple juice.

• April will purchase 2 bottles of orange juice and no more than 2 bottles of apple juice.

• April will purchase at least 2 bottles of orange juice and at least 2 bottles of apple juice.

• April will purchase at least 2 bottles of orange juice and at most 4 bottles of apple juice.