7th Semester Review

The two figures are proportional. Find the value of x.

• 12 in

• 24 in

• 30 in

• 40 in

The scale of a model train is 1 inch to 13.5 feet. One of the cars of the model train is 5 inches long. What is the length in feet of the real train car?

• 67.5

• 32.4

• 14.5

• 2.7

Laurie will draw a scale model of the garden she wants to plant. Her scale will be 1 cm = 2.5 feet. What will be the actual dimensions of Laurie's garden?

• 1.6 feet by 3.4 feet

• 4 feet by 34 feet

• 8 feet by 34 feet

• 10 feet by 21.25 feet

Triangle 2 is a scaled copy of Triangle 1. According to the information in the diagram, what is the length of side b?

• 4.5

• 12.5

• 36.0

• 45.0

There was a triangle with sides of 5.6, 6.5, and 8.7 inches in length. If Rochelle wanted to create a larger triangle with a scale factor of 2, what would be the lengths of Rochelle's triangle?

• 7.6 inches

• 11.2 inches

• 13.0 inches

• 17.4 inches

• 20.8 inches

If 5 pizzas cost $60, how much will 9 pizzas cost?

• $98

• $108

• $110

• $112

A train in Japan can travel 813.5 miles in 5 hours. Find the unit rate in miles per hour.

• 162.7 mph

• 325.4 mph

• 650.8 mph

• 813.5 mph

Which point on the graph represents the constant of proportionality?

• (0,0)

• (1,15)

• (15,1)

• (8,20)

The relationship between the number of workers and the number of bars produced is proportional.

• True

• False

The graph shows the amount of protein contained in a certain brand of peanut butter. Which statement describes the meaning of the point (6,30) on the graph?

• There are 6 grams of protein per tablespoon of peanut butter.

• There are 30 grams of protein per tablespoon of peanut butter.

• There are 6 grams of protein in 30 tablespoons of peanut butter.

• There are 30 grams of protein in 6 tablespoons of peanut butter.