Keystone Review Quiz 3

A truck left a warehouse at 1:00 p.m. The truck traveled 232 miles by 5:00 p.m. The truck continued traveling at the same average speed. How many miles, altogether, did the truck travel by 6:30 p.m.?

• 58

• 87

• 319

• 348

The ordered pairs shown below are on the same line.

(6, 4) (12, 6)

Which equation describes the relationship between the x-coordinates and y-coordinates in the ordered pairs?

• y = 3x – 14

• y = 3x – 6

• y = 1/3 x + 10

• y = 1/3 x + 2

A line is shown on the coordinate grid below.

What is the slope of the line?

• –7

• –7/5

• 7/5

• 7

Martin plots the points listed below onto a coordinate plane.

(0, 4) (1, 4) (2, 5) (3, 6) (4, 7) (5, 5)

Which statement best explains whether Martin’s points represent a function?

• Martin’s points represent a function because any horizontal line drawn on the coordinate plane will intersect at most one point.

• Martin’s points represent a function because any vertical line drawn on the coordinate plane will intersect at most one point.

• Martin’s points do not represent a function, because a horizontal line can be drawn on the coordinate plane that intersects two points.

• Martin’s points do not represent a function, because a vertical line can be drawn on the coordinate plane that intersects two points.

Rick works as a mathematics tutor. He made the graph below to show the number of algebra students and the number of geometry students he helped in each of the last five weeks.

What is the range of the relation represented by Rick’s graph?

• {2, 3, 4}

• {1, 2, 3, 4}

• {1, 3, 4, 5, 6}

• {1, 2, 3, 4, 5, 6}

Peter makes banners. He charges a fixed amount to create the banner’s design. He then charges an additional amount for each banner a customer orders. He uses the equation y = 44.95x + 39.95 to find the total amount (y), in dollars, he will charge a customer who orders x banners. Which statement about how Peter charges his customers must be true?

• Peter charges $44.95 to create the banner’s design.

• Peter charges $39.95 for each banner a customer orders.

• The difference in the total amount charged between an order of 3 banners and an order of 4 banners is $39.95.

• The difference in the total amount charged between an order of 3 banners and an order of 4 banners is $44.95.

The set of ordered pairs shown below is a relation that is a function of x.

{(1, 3), (2, 4), (3, 5), (4, 6)}

Which ordered pair could be included in the set so that the relation remains a function of x?

• (0, 4)

• (1, 6)

• (3, 3)

• (4, 7)

Aki wants to buy a music player that costs $234 using only the money he earned from mowing lawns. The table below shows the amount of money Aki earned as a function of the number of lawns he mowed.

Based on the function shown in the table, what is the least number of lawns Aki will have to mow to buy the music player?

• 22

• 29

• 30

• 31

Drew works at a Laundromat. Every day for two weeks, he records the total number of loads of laundry washed at the Laundromat. The first quartile of his data is 60. The median of his data is 82. On how many of the next 200 days should Drew expect there to be at least 60 but no more than 82 loads of laundry washed at the Laundromat?

• 25

• 50

• 100

• 175

The students in a college class all read four books by a certain author. The professor asked 25 of the 125 students in the class to pick their favorite of the four books. The circle graph below displays the results.

Based on the circle graph, how many of the 125 students in the class would be expected to pick book Q as their favorite?

• 4

• 5

• 20

• 50