The following regression model has been proposed to predict sales at a fast food outlet. 
a.What is the interpretation of 15 (the coefficient of X3) in the regression equation?
b.Predict sales for a store with 2 competitors, a population of 10,000 within one mile, and one drive-up window (give the answer in dollars).
c.Predict sales for the store with 2 competitors, a population of 10,000 within one mile, and no drive-up window (give the answer in dollars).
Definitions:
Slave Trade
The historical trade involving the capture, transport, and sale of human beings as slaves, particularly associated with the transatlantic trade from Africa to the Americas from the 16th to the 19th centuries.
Africans
Refers to the people native to the African continent, encompassing a wide range of cultures, ethnicities, and nations.
Americas
A collective term for the continents of North America and South America, including all its countries and regions.
Negros De Ganhos
A term from Brazilian history referring to enslaved Africans who were allowed to work for their own earnings, albeit under conditions set by slaveholders.
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