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Margie and her sister wanted to purchase a bag of popcorn for movie night. They compared the prices and sizes of four bags of popcorn.

Pop-A-Lot Pop Kornz Pop-arazzi Kernels Popcorn
Size 7 ounces 8 ounces 17 ounces 3 ounces
Cost $3.50 $4.25 $7.49 $2.09

Part A: Calculate the corresponding unit rate for each package. (2 points)

Part B: Interpret what the unit rates found in Part A represent. (1 point)

Part C: Choose which package is the best buy. (1 point)

Part A:

Pop-A-Lot Pop Kornz: $3.50/7 ounces = $0.50/ounce
Pop-arazzi Kernels Popcorn: $4.25/8 ounces = $0.53/ounce
Kernels Popcorn: $7.49/17 ounces = $0.44/ounce
Pop-arazzi Kernels Popcorn: $2.09/3 ounces = $0.70/ounce

Part B: The unit rates represent the cost of each ounce of popcorn.

Part C: The Pop-arazzi Kernels Popcorn is the best buy at $0.44/ounce.

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Part A: To calculate the corresponding unit rate for each package, divide the cost by the size for each bag of popcorn.

For Pop-A-Lot Pop Kornz Popcorn:
Unit rate = Cost/Size = $3.50/7 ounces = $0.50 per ounce

For Pop-arazzi Kernels Popcorn:
Unit rate = Cost/Size = $4.25/8 ounces = $0.53 per ounce

For Popcorn:
Unit rate = Cost/Size = $7.49/17 ounces = $0.44 per ounce

For Kernels Popcorn:
Unit rate = Cost/Size = $2.09/3 ounces = $0.70 per ounce

Part B: The unit rates calculated represent the cost of one ounce of each type of popcorn. It tells us how much we would pay for each ounce.

Part C: To determine the best buy, we need to find the lowest unit rate. In this case, the lowest unit rate is for Popcorn at $0.44 per ounce. Therefore, the best buy is the Popcorn package.

Part A: To calculate the corresponding unit rate for each package, divide the cost by the size of each bag.

For Pop-A-Lot Pop Kornz:
Unit rate = Cost / Size = $3.50 / 7 ounces = $0.50 per ounce

For Pop-arazzi Kernels:
Unit rate = Cost / Size = $4.25 / 8 ounces = $0.53 per ounce

For Popcorn:
Unit rate = Cost / Size = $7.49 / 17 ounces = $0.44 per ounce

For Pop-arazzi Kernels:
Unit rate = Cost / Size = $2.09 / 3 ounces = $0.70 per ounce

Part B: The unit rates found in Part A represent the cost of each brand of popcorn per ounce. In other words, they show how much you would pay for one ounce of popcorn for each brand.

Part C: To determine which package is the best buy, we need to compare the unit rates. The lower the unit rate, the better the deal. In this case, Popcorn has the lowest unit rate of $0.44 per ounce, making it the best buy.