A store purchased a DVD for $15.00 and sold it to a customer for 50% more than the purchase price. The customer was then charged a 7% tax when the DVD was sold. What was the customer’s total cost for the DVD? Round your answer to the nearest cent.

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *