Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 3 - Introduction to Graphing - 3.4 Rates - 3.4 Exercise Set: 31

Answer

20 calls per hour

Work Step by Step

At 10 A.M., a total of 30 calls have been handled. By 1 P.M., a total of 90 calls have been handled. The increase in number of calls handled was: $=90-30=60$ The elapsed time from 10 a.m. to 1 p.m. is 3 hours. Thus, the average rate is: $=\dfrac{60\text{ calls}}{3 \text{ hours}}=20$ calls per hour
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.