The legnth of a rectangle decreases at 3cm/sec, while its width increases at 2cm/sec. At a certain moment the rectangle is 50cm long and 20cm wide. Is the area of the rectangle increasing or decreasing, and how fast? Explain your answer.

The legnth of a rectangle decreases at 3cm/sec, while its width increases at 2cm/sec. At a certain moment the rectangle is 50cm long and 20cm wide. Is the area of the rectangle increasing or decreasing, and how fast? Explain your answer.

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section2.3: Rules For Addition

Problem 14P

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The legnth of a rectangle decreases at 3cm/sec, while its width increases at 2cm/sec. At a certain moment the
rectangle is 50cm long and 20cm wide. Is the area of the rectangle increasing or decreasing, and how fast? Explain
your answer.

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