Lori Cook has developed the following forecasting model:

hat$(y)=45\mathrm{.}0+4\mathrm{.}20x$

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

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

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