MY NOTES ASK YOUR TEACHER PRACTICE ANOT 4. [-/3 Points] DETAILS ASWESBE9 15.E.004.MI. A shoe store developed the following estimated regression equation relating sales to inventory investment and advertising expenditures where 9-21+10x+6x2 x, inventory investment ($1,000s) Xy y advertising expenditures ($1,000s) sales ($1,000). (a) Predict the sales (in dollars) resulting from a $14,000 investment in inventory and an advertising budget of $11,000. (b) Interpret b, and by in this estimated regression equation. Sales can be expected to increase by $ $ for every dollar increase in inventory investment when advertising expenditure is held constant. Sales can be expected to increase for every dollar increase in advertising expenditure when inventory investment is held constant. Need Help? Read It Master I