Answer
-30
Work Step by Step
According to the textbook, the diver goes down 90ft or -90 every 3 minutes. Therefore, for one minute, he goes down -90$\div$3=-30 or down 30 ft.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 1 - Foundations for Algebra - 1-6 Multiplying and Dividing Real Numbers - Practice and Problem-Solving Exercises - Page 42: 38
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