Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 2 - Section 2.2 - The Slope of a Line - 2.2 Exercises: 103

Answer

The average number of digital cameras sold per year decreased (on average) by 1858.7 thousand/year from 2010 to 2013.

Work Step by Step

To calculate the average rate of change between two points $(x_1,y_1)$ and $(x_2,y_2)$, we use the formula: $\displaystyle average~rate~of~change=\frac{y_2-y_1}{x_2-x_1}$ Here, we use the points $(2010,\ 7246)$ and $(2013,\ 1670)$: $\displaystyle average~rate~of~change=\displaystyle \frac{1670-7246}{2013-2010}=\frac{-5576}{3}=-1858.7$ thousand digital cameras/year Thus the average number of digital cameras sold per year decreased (on average) by 1858.7 thousand/year from 2010 to 2013.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.