John Smith has developed the following forecasting model:
Y=36+4.3X
where
Y=Demand for K10 air conditioners
X=the outside temperature (F)
(a) Forecast the demand for K10 when the temperature is 70 degrees F?
(b) What is the demand for a temperature of 80 degrees F?
(c) What is the demand for a temperature of 90 degrees F?