Biologists have noticed that the chirping of crickets of a certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 116 chirps per minute at 66 degrees Fahrenheit and 179 chirps per minute at 80 degrees Fahrenheit. (a) Find a linear equation that models the temperature T as a function of the number of chirps per minute N. T(N)= (b) If the crickets are chirping at 156 chirps per minute, estimate the temperature: T=