Problem

Suppose a roast, initially at 60°F is placed in a 350°F oven at 11 AM. The temperature of...

Suppose a roast, initially at 60°F is placed in a 350°F oven at 11 AM. The temperature of the roast is measured every 15 minutes for the first hour, with the following results.

Time

11 AM

11:15 AM

11:30 AM

11:45 AM

12 noon

Temperature (°F)

50

67

82

96

110

Assuming that u(t) = 350 – T(t) is an exponentially declining function, find the best fit of the form T(t) = 350 – a • e–kt. When will the roast be 200°F, and hence ready to serve (medium)?

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Solutions For Problems in Chapter 4.3