Lori Cook has developed the following forecasting model:

hat$(y)=40\mathrm{.}0+4\mathrm{.}20x$

where hat$(y)=$ demand for Kool Air conditioners and

$x=$ the outside temperature $($degrees Fahrenheit$)$

a$)$ When the temperature outside is $70F,$ demand forecast $=334$ air conditioners $($enter your response as an integer$).$

b$)$ When the temperature outside is $80F,$ demand forecast $=$

air conditioners $($enter your response as an integer$).$