Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.8 - Exponential and Logarithmic Equations and Problem Solving - Exercise Set - Page 592: 78

Answer

$(3.78,12)$

Work Step by Step

In order to find the intersection, first create a well-labeled coordinate axis. Then, draw the line y=7, which will be a horizontal line through the point (0,7). Next, draw the second function. This function should start at a small value when x is negative and increase slowly, with the rate of increase becoming more rapid. Be sure to draw the function so that as x increases, the slope increases as well. Then, find where the two graphs intersect. (To obtain a precise value, use a graphing calculator or an online graphing program.)
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.