Question

A retail store is having a back to-school- sale on chrome books.At 10:00 am the store sold 8 Chromebook’s. At 7:00pm the store discovers that it sold 32 Chromebooks. What is the average rate of change between 10:00am and 7:00pm?round you answer to the nearest unit.

Answer 1

The average rate of change between 10:00am and 7:00pm is 3 units per hour.

First of all, we have to calculate the difference between 10:00am and 7:00pm, this will be converted to 24 hours to make it easier.

= (12 + 7) - 10

= 19 - 10 = 9 hours

The difference in sales between the time will be:

= 32 - 8

= 24 Chromebooks

Then, the average rate of change between 10:00am and 7:00pm will be:

= 24/9

= 2.67

= 3 units per hour.

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