Unit 3A Study Material

Which is a better buy?  
2 books for $15 or
6 books for $45

• 2 books for $15
• 6 books for $45
• 8 books for $60
• They are the same.

1.5 pounds of Fiji Apples for $29.85 or 1.2 pounds of Granny Smith apples for $20.28. Which is the better deal?

• Fiji
• Granny Smith

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

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour
• 15 customers per hour
• 12 customers per hour
• 20 customers per hour

Jacob mixed 8 cups of flour with 2 cups of water to make pizza dough.  To represent the relationship between the number of cups of flour, f, and the number of cups of water, w, needed to make the same pizza dough, Jake wrote the equation
f = ____ w
What should be placed in the blank?

• 1/4
• 8
• 2
• 4

• 9 buses

• 6 buses

• 3 buses

• 1 bus

• 1 ounce

• 2 ounce

Mr. Diaz changed his shower head to conserve water and energy. The table shows the relationship between the amount of flow and the duration of the water flow.

Which statement BEST describes the rate of water flow?

• 5 gallons per minute

• 2.1 gallons per minute

• 2.5 gallons per minute

• 3.0 gallons per minute

Which statement below accurately represents the graph?

• $100 is earned for each hour worked
• $200 earned for every 2 hours worked
  is the unit rate
• $500 is earned for every 8 hours worked
• $200 is earned after working 3 hours

y = kx

• Proportional

• Non Proportional