Unit 3 Lesson 1-4

Find the Unit Rate.
405 rotations in 5 minutes   

• 81 rotations per minute
• 73 rotations per minute
• 18 rotations per minute
• 810 rotations in 10 minutes

Find the Unit Rate.
72 ounces for 12 servings   

• 7 ounces per serving
• 144 ounces for 24 servings
• 6 ounces per serving
• 36 ounces for 6 servings

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Solve the proportion.

• n=6
• n=24
• n=7
• n=8

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35
• 60
• 18
• 50

The pair of figures is similar. Find the missing side.

• x = 20
• x = 12
• x = 5
• x = 4

The pair of figures is similar. Find the missing side.

• x = 10
• x = 4
• x = 2
• x = 5

A photo is 12 in. wide by 18 in. tall. If the width is scaled down to 9 inches, how tall should the similar photo be? 

• 15 in
• 0.67
• 13.5 in
• 2

The pair of figures is similar. Find the missing side.

• x = 22
• x = 2
• x = 16
• x = 8