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 69 degrees Fahrenheit and 179 chirps per minute at 90 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 151 chirps per minute, estimate the temperature: T