Unit 3 Review Part 2

A cupcake factory operates 8 icing machines, with each machine capable of icing 15 cupcakes every 30 seconds. How many cupcakes can 1 machine ice in 1 minute?

• 30

• 0.5

• 15

• 2

A cupcake factory operates 8 icing machines, with each machine capable of icing 15 cupcakes every 30 seconds. How many cupcakes can all 8 machines ice in 1 minute?

• 180 cupcakes
• 120 cupcakes
• 300 cupcakes
• 240 cupcakes

Maria started a garden maintenance business to earn extra income during the summer. The amount Maria charges to maintain a garden is proportional to the time it takes her to complete the task. For a garden that takes 4 hours to maintain, Maria charges the customer $89.99. Write an equation that represents the relation between the amount of dollars, d, that Maria charges when it takes her h hours to maintain the garden. (Use the constant of proportionality formula!)

• d = 20 * h
• d = 25 * h
• d = 30 * h
• d = 22.50 * h

Maria estimated that it would take 6.5 hours to maintain Mrs. Johnson’s garden. She quoted her a price of $200.00. Is the price that Maria quoted Mrs. Johnson fair? Why or why not?

• No, the price is too high for the time required.
• Yes, the price includes a senior discount

• No, she is charging more than her hourly price

• No, the price should be based on the size of the garden.

Use the graph to answer the question: Does this graph represent a proportional relationship between hours and miles walked?

• No, it's a straight line but doesn't go through the origin

• Yes, it's a straight line that goes through the origin

• No, it goes through the origin but is not a straight line

• Yes, because the relationship between miles walked and hours will always be proportional

Fill in the blanks: What does the point (2, 4) mean in the context of this problem? Word bank: 4, 2, hours, walk, miles.

• Jeremiah can walk 4 miles in 2 hours.
• Jeremiah can walk 2 miles in 4 hours

• Jeremiah can walk 2 hours in 1 miles

• Jeremiah can walk 2 hours in 4 kilometers

How many miles can Jeremiah walk in 1 hour (this is unit rate!)

• 2 miles

• 1 mile

• 4 miles

• 0 miles

What is the point on the graph that represents the unit rate?

• (1, 1)
• (1, 2)

• (2, 1)

• (0, 0)

What is the constant of proportionality for the graph on the left? (Use the constant of proportionality formula!)

• 4

• 2

• 1

• 3

What does that a unit rate of 3 mean in context?

• Chik Fil A sells 1 sandwich per 3 minutes

• Chik Fil A sells 3 sandwiches per minute

• Chik Fil A sells 1 sandwich per minutes

• Popeyes sells 3 sandwiches per minutes