Can someone please help me understand ?

label Mathematics
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A potato is placed in a preheated oven to bake. Its temperature P = P(t) is given by the following.

P = 400 − 325e-t/50

(b) What was the initial temperature of the potato? (nearest whole number.)

What was the average rate of change per minute during the first 30 minutes? (two decimal places)

What was the average rate of change per minute during the second 30 minutes? (two decimal places)

(f) What is the temperature of the oven? 

Sep 24th, 2015

Thank you for the opportunity to help you with your question!

(b) 75 degrees

What was the average rate of change per minute during the first 30 minutes?  4.88 degrees/min

What was the average rate of change per minute during the second 30 minutes?  2.68 degrees/min

(f)  400 degrees

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 25th, 2015

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Sep 24th, 2015
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Sep 24th, 2015
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