A multiple regression analysis based on a data set that consists of 30 observation yielded the following estimated demand equation: Q =120-1.1P+0.04I+0.90A Where P is price, I is income, and A is...

A multiple regression analysis based on a data set that consists of 30 observation yielded the following estimated demand equation:

Q =120-1.1P+0.04I+0.90A

Where P is price, I is income, and A is advertising. If price is equal to $1000, income is equal to $20000, and advertising expenditure are equal to $5000, then what is the predicted demand function?