Question

A retail store is having a back-to-school sale on chromebooks. At 10.00 AM, the store has sold 8 chromebooks. At 7.00 PM. the store discovers that it has sold 32 chromebooks. What is the average rate of change between 10.00 AM and 7.00 PM. Round your answer to the nearest unit.

Answer 1

2.7 Chromebooks per hour

Step-by-step explanation:

At 10.00 AM, the store has sold 8 Chromebooks.

At 7.00 PM, it has sold 32 Chromebooks.

The number of hours between 10.00 AM and 7.00 PM = 9 Hours

The average rate of change between 10.00 AM and 7.00 PM will be:

`\begin{gathered} =(32-8)/(9) \\ =\frac{24\text{ Chromebooks}}{9\text{ Hours}} \\ =2.67\text{ Chromebooks per hour} \\ \approx\text{ }2.7\text{ Chromebooks per hour} \end{gathered}`

The average rate is 2.7 Chromebooks per hour correct to the nearest unit.