Question

A roast was cooked at 325 f in the oven for 4 hours. The internal temperature rose from 32 f to 145 f. What was the average rise in temperature per hour?

Answer 1

The total rise in temperature is

=145-32=113f

So average rise per hour would be= 113f/4=28.25f

Answer 2

Answer:

Concept:

By examining the slope of a secant line or the average rate of change over a relatively brief period, one might approximate the derivative.

Explanation:

Initial internal temperature =  $=32^{\circ}\mathrm{f}$

final internal temperature = $=145^{\circ} \mathrm{f}$

The difference in temperature = 145 - 32  $= 113^{\circ} \mathrm{f}$

Time is taken to cook = 4 hours

Change in temperature per hour   $=\frac{113^{\circ}}{4}$

So the average rise in temperature per hour is  $28.5^{\circ}\mathrm{f}$

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