Answer
$(a)$ See the image below.
$(b)$ $y = 4.85667x - 220.96667$
$(c)$ $\approx 265$ $chirps/min$
Work Step by Step
$(a)$ See the image above.
$(b)$ We can find the function using regression line calculator:
$y = 4.85667x - 220.96667$
$y$ stands for the chirping rate for given $x$ temperature.
$(c)$ If $x=100°F$
$y= 4.85667\times100 - 220.96667\approx 265$
