The minimum number of carpet rolls n needed to carpet a house varies directly as the house’s square footage h and inversely with the square footage r in one roll. it takes a minimum of two 1200-ft2 carpet rolls to cover 2300 ft^2 of floor. what is the minimum number of 1200-ft^2 carpet rolls you would need to cover 2500 ft^2 of floor? round your answer up to the nearest half roll