Unit Rates, constant of proporionality, and Similar Figures SBC

Tareq pays $22.10 for 2.6 pounds of Salmon. What is the price per pound of Salmon?

• $57.46

• $8.50

• $19.50

• $24.70

Jose paid $47.00 for 4 movie tickets. Each ticket cost the same amount. What was the cost of each movie ticket in dollars and cents?

Mathematical Equivalence

ON

Cheddar cheese cost $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?

• x = 4.25 + y

• x = 4.25y

• y = 4.25 + x

• y = 4.25x

A recipe says to use 3 cups of flour to make 48 cookies. What is the constant of proportionality that relates the number of cookies made, y, to the number of cups of flour, x.

• 0.6

• 48

• 3

• 16

At a school carnival tickets can be purchased to participate in different activities. The table shows the different cost for different numbers of tickets.

What is the constant of proportionality that relates y, the total cost in dollars, to x, the number of tickets purchased.

• 4.00

• 0.25

• 1.00

• 0.10

Imani compared the number of fluid ounces per bottle of sunscreen to the cost of four different brands of sunscreen. The information she gathered is shown in the table.

Based on the data in the table, which brand of sunscreen has the greatest cost per fluid ounce?

• Brand W

• Brand X

• Brand Y

• Brand Z

A shopper pays $3.95 for 5 pounds of potatoes. What is the price per pound for potatoes?

• $0.40

• $0.79

• $1.05

• $1.27

A table of x and y values is shown.

What is the constant of proportionality that relates y to x?

• 1/4

• 4

• 1/8

• 8

A pair of quadrilaterals are similar. Which statements about the quadrilaterals must be true.

Select TWO correct answers:

• The corresponding sides of the quadrilaterals must be congruent

• The opposite sides of the quadrilaterals must be congruent

• The corresponding angles of the quadrilaterals must be conguent

• The corresponding angles of the quadrilaterals must each be right angles

• The corresponding side lengths of the quadrilaterals must be proportional

A student made a model of the Washington monument using a scale in which 1 inch represents 15 feet. The actual height of the Washington monument is approximately 555 feet. Which measurement is closest to the height of the model in inches?

• 37 in

• 75 in

• 46 in

• 180 in