Question

A local convenience store is having a sale on paper towels. At noon, the store has sold 12 packs of toilet paper. At 3:00 pm, the same store has sold 57 packs of toilet paper. What is the average rate of change from noon to 3:00 pm?

Answer 1

Answer:  15 packs per hour

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Work Shown:

y = change in number of packs sold

y = 57 - 12

y = 45 packs

x = change in time (in hours)

x = 3 hours

m = slope = rate of change

m = y/x

m = 45/3

m = 15

The store sold 15 packs per hour during the timespan of noon to 3:00 pm.