Question

The function C(w)=0.013w^2-w-7 estimates the wind chill temperature C(w) at 0 degrees F for wind speeds w from 5 to 30 mile per hour. Estimate the wind chill temperature at 0 degrees F if the wind speed is 20 miles per hour.

Answer 1

To find the wind chill temperature at 0 degrees F for a wind speed of 20 mph, plug the value of the wind speed into the function C(w)=0.013w^2-w-7. After calculation, the wind chill temperature is estimated to be -21.8 degrees F.

Step-by-step explanation:

To estimate the wind chill temperature at 0 degrees F with a wind speed of 20 miles per hour using the given function C(w)=0.013w2-w-7, simply substitute the value of w into the equation:

C(20)=0.013(20)2 - (20) - 7

C(20)=0.013(400) - 20 - 7

C(20)=5.2 - 20 - 7

C(20)=-21.8

Thus, the estimated wind chill temperature at 0 degrees F for a wind speed of 20 miles per hour is -21.8 degrees F.

Answer 2

c(w) = 0.013w^2 - w - 7

w = 20mph => c(20) = 0.013(20)^2 - 20 - 7 = -21.8 °F