Suppose that a simple linear regression model is appropriate for describing the relationship between= house price and= house size (sq ft) for houses i

Suppose that a simple linear regression model is appropriate for describing the relationship between= house price and= house size (sq ft) for houses in a large city. The true regression line is= 22,500 + 42and= 5000.(a) What is the average change in price associated with one extra sq ft of space?$With an additional 100 sq ft of space?$(b) What proportion of 1800 sq ft homes would be priced over $100,000? (Round your answer to four decimal places.)Under $90,000? (Round your answer to four decimal places.)