Unit 3 Test Study Guide

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

8.  Find the unit rate of $97.50 for 15 pizzas.

• $6 per pizza
• $82.50 per pizza
• $5.50 per pizza
• $6.50 per pizza

Which is the better buy? a 12 pack of Coke for $3.50 or a six pack of Coke for $1.80?

• The 12 pack of Coke
• The 6 pack of Coke
• Neither
• They are the same

Elijah earn $200 for 8 hours of work. What is the unit rate (in dollars per hour)?

• $50 per hour
• $12 per hour
• $192 per hour
• $25 per hour

Identify the constant of proportionality. Write your answer as y=kx

• y = 14x

• y = 7x

• y = 2x

• y = 6x

Identify the constant of proportionality. Write your answer as y=kx

• y = 16x

• y = 2x

• y = 8x

• y = 4x

Determine the constant of proportionality.

• 80

• 20

• 40

• 160

What is the constant of proportionality?

• 7
• 3.3
• 3/10
• 14

What is the constant of proportionality? 

• 1/15
• 2
• 30
• 15

What is the constant of proportionality? 

• 4
• 2
• 1/4
• -4