High School

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------------------------------------------------ 1. The temperature [tex] T [/tex], in degrees Fahrenheit, of your holiday turkey placed into a hot oven is modeled by [tex] T = f(t) [/tex], where [tex] t [/tex] is the time in minutes since the turkey was put in the oven.

A. What is the sign of [tex] f^{\prime}(t) [/tex]? Explain how you know.

B. What are the units of [tex] f^{\prime}(35) [/tex]?

C. Explain the meaning of the statement [tex] f(35) = 106 [/tex] in the context of the problem.

D. What is the meaning of the statement [tex] f^{\prime}(35) = 3 [/tex]?

Answer :

Sure! Let's tackle this problem step-by-step:

### A. What is the sign of [tex]\( f^{\prime}(t) \)[/tex]?

The derivative [tex]\( f^{\prime}(t) \)[/tex] represents the rate of change of the turkey's temperature over time. Since the turkey is being placed in a hot oven, the temperature of the turkey is increasing as time passes. Therefore, the rate of change of temperature, [tex]\( f^{\prime}(t) \)[/tex], is positive, indicating a rising temperature.

### B. What are the units of [tex]\( f^{\prime}(35) \)[/tex]?

The derivative [tex]\( f^{\prime}(t) \)[/tex] describes the rate of change of temperature with respect to time. Since the function [tex]\( f(t) \)[/tex] outputs temperature in degrees Fahrenheit and the input [tex]\( t \)[/tex] is in minutes, the units of [tex]\( f^{\prime}(t) \)[/tex] would be the change in temperature per unit of time. Therefore, the units of [tex]\( f^{\prime}(35) \)[/tex] are degrees Fahrenheit per minute.

### C. Explain the meaning of the statement [tex]\( f(35) = 106 \)[/tex] in the context of the problem.

The function [tex]\( f(t) \)[/tex] represents the temperature of the turkey at a given time [tex]\( t \)[/tex]. So, the statement [tex]\( f(35) = 106 \)[/tex] means that after 35 minutes in the oven, the turkey's temperature is 106 degrees Fahrenheit.

### D. What is the meaning of the statement [tex]\( f^{\prime}(35) = 3 \)[/tex]?

The statement [tex]\( f^{\prime}(35) = 3 \)[/tex] indicates that at 35 minutes, the turkey's temperature is increasing at a rate of 3 degrees Fahrenheit per minute. This tells us how quickly the temperature is rising at that specific moment in time.

I hope this breakdown helps you understand the problem better! If you have any more questions, feel free to ask.