Calculate the intercept$$ term, ModifyingAbove a with caret $($enter your responses rounded to one decimal$$ place$).$

ModifyingAbove a with caret

equals

$5,239\mathrm{.}2$ minus $91\mathrm{.}2$ times $61\mathrm{.}8$

$$

$$

equalsnegative $390\mathrm{.}9$

Part $4$

b$.$ Use the regression forecasting model to forecast total golf ball sales for June and July $2018.$ Average temperatures are expected to be $74$ degrees in June and $83$ degrees in July.

The forecast of total golf ball sales for June $2018$ is

$$

enter your response here. $($Enter your response rounded to the nearest whole$$ number.$)$