9days ago the area covered by a mold and a piece of bread with three square inches today the mold covers 9 square inches find the change of rate

9 days ago, the mold covered an area of .

Today (after 9 days), the mold covers an area of .

What is the increase in area? It went from 3 to 9. So the increase is .

Now, we need to find rate of change. It means to find  how much the area increased every day over the past 9 days. We simply divide the increase (6) by the total number of days (9) to find the rate per day. So we have,

ANSWER: Change of Rate = per day

yep

step-by-step explanation:

a

step-by-step explanation:

a