Chapter 8.4A, Problem 13A

Wildlife experts found that the number of chirps $C$ a cricket makes in a $15$-sec interval is related to the temperature $T$ in degrees Fahrenheit, as shown in the following graph:

a. Write a formula for $C$ in terms of $T$ that seems to fit the data best.

b. Use the equation in (a) to predict the number of chirps in $15\sec$ when the temperature is $90°$.

c. If $N$ is the number of chirps per minute, write a formula for $N$ in terms of $T$.

d.