The total cost? (in dollars) of producing x college textbooks is C(x)=46x+43,000.
?(a) What are the fixed? costs?
?(b) What is the marginal cost per? book?
?(c) What is the total cost of producing 1500 ?books? 37,000 ?books?
?(d) What is the average cost when 1500 books are? produced? when 37,000 books are? produced?