Hector spent $36.75 for 2 dvds that cost the same amount. the sales tax on his purchase was 2.15. hector also used a coupon for $1.00 off his purchase. how much did each dvd cost? work backward to find the cost of the 2 dvds

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125