Keystone Review 4

The first six numbers in a pattern are listed.

The pattern continues . Which expression could be used to determine the 100th number in the pattern?

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Tags

CCSS.HSF.BF.A.2

The table below lists all the ordered pairs representing a relation .

What is the domain of the relation?

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For a local race, the prize for first place is $250 plus an additional $5 for every person who registers for the race . The equation shown below represents the prize (y), in dollars, for first place based on the number of people (x) who register for the race .

y = 5x + 250 Which statement about the prize for first place is true?

• The prize for first place will always be a multiple of 50 .

• The prize for first place will be $325 if 75 people register for the race .

• The prize for first place when there are 50 people registered for the race is twice as much as when there are 25 people registered .

• The prize for first place when there are 100 people registered for the race is twice as much as when there are 25 people registered .

Tags

CCSS.HSF.LE.B.5

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

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Paul paints houses . He charges his customers a fixed amount to cover the expenses of using a paint sprayer and buying brushes . He also charges an amount based on the number of gallons of paint (x) he will need . The equation shown below represents the total amount (y), in dollars, Paul charges his customers for the materials he will need for a job .

y = 14 .5x + 80 What is represented by the number 14 .5 in Paul’s equation?

• the number of gallons of paint Paul will need

• the charge for each gallon of paint Paul will need

• the number of hours it will take to complete the paint job

• the fixed amount charged for using a paint sprayer and buying brushes

Tags

CCSS.HSF.LE.B.5

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

A line is graphed on the coordinate plane shown.

Which statement correctly describes the line?

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Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Jessie lifts dumbbells as part of her exercise routine . The scatter plot shows the relationship between the number of pounds (x) a dumbbell weighs and the number of repetitions (y) of a specific exercise that Jessie can perform .

Based on the scatter plot, which equation represents a line of best fit that could be used to model the relationship between the weights of the dumbbells and the numbers of repetitions that Jessie can perform?

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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?

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• 6

• 7

• 22

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

• 1048

• 1179

• 1368

Tags

CCSS.4.MD.A.2