Lori Cook has developed the following forecasting model: y = 40.0 +4.20x, where y=demand for Kool Air conditioners and x = the outside temperature (degrees Fahrenheit) a) When the temperature outside is 70 F, demand forecast = b) When the temperature outside is 80 F, demand forecast = c) When the temperature outside is 90 F, demand forecast = air conditioners (enter your response as an integer). air conditioners (enter your response as an integer). air conditioners (enter your response as an integer).