#### Answer

$r=2.7 $

#### Work Step by Step

We see that the variable only appears once and is in the numerator, so we know that the Multiplication Property of Equality will work well. We multiply both sides of the equation by 2.1 to obtain that $r=2.7$.

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

$r=2.7 $

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

Update this answerAfter 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.