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Answer:
17 yards
Step-by-step explanation:
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A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.

B) Find general solution by separating variables and integrating

:
C) Initial condition is t=0, T = 87

D) Total time elapsed is 10 minutes, new temperature is 84

solve for alpha

E) Temperature function is:

solving for t

Plug in T = 98.6

This is approximately 32 minutes before he arrived or about 1:20 AM
Im not sure how to do it because you don't have a plus or minus sign. add that and then i will show you.
There is nothing that I see that I can tall you the answer
ANSWER:
The total amount of money at the end of three years is $79.45.