What other factors affect the sales of GoodBelly$$s products?

$4.$ Based on the regression output, what are your recommendations to GoodBelly$$s

management?

$5.$ What are your suggestions to improve and refine the model?

$6.$ Are GoodBelly$$s products price sensitive$?$

$7.$ Does GoodBelly$$s popularity fall within a certain demographic? $($Are there significate

variable to justify your conclusion?

$8.$ What are the total sales if GoodBelly uses all the promotion tactics?