9 days ago the area covered by the mold

Asked by admin @ in Math viewed by 430 People

Nine days ago, the area covered by the mold on a piece of bread was 3 square inches. Today the mold covers 9 square inches. What is the rate of change in mold's area?

Answered by admin @


Answer: The rate of change in mold's area would be 2/3 square inches per day.


Step-by-step explanation:

Given that,

The area covered by the mold nine days ago= 3 square inches

The area covered by the mold in the present time= 9 square inches

The change in area covered by mold= 9-3=6 square inches

This change occurred in 9 days.

So,

The rate of change in mold's area= change in area covered/time taken

The rate of change in mold's area= 6/9=2/3 square inches per day


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