Question

Sheldon is making a steak for dinner. at first, the steak is at room temperature, 72°Friday. then, he places it on the grill, where it's temperature increase at a rate of 3 1/5°F for each minutes. after ten minutes, he removed The steak from the grill and let's it cool for 7 minutes on the counter. while it is siting on The counter, it's cool at a rate of 4 2/7°F each minutes. what was the net change in the Temperature of the steak from before it was cooked and when it was served?

Answer 1

We start qt 72 degrees,
3 1/5 = 16/5 = 3.2 x 10 minutes = 32 degrees.
72 + 32 = 104 degrees. 
Cool Time:
 4 2/7 = 30/7 = 4.28571429 x 7 minutes = 30 degrees.
104 - 30 = 74
So we went from 72 to 74 degrees, that is a 2 degree difference. 
This is what i got, i hope i understood the question correctly.v