Answer:
Option b. $7.68
Explanation:
we know that
1) The music store is having a 15% off sale on all classical music cds

If the cd has a price of $23.99
then
The price with 15% off sale is equal to

2) Lyell has a coupon for 20% off any classical music cd.

If the cd with a 15% off sale has a price of $20.39
then
The price with a coupon for 20% off is equal to

Find the difference between the original price and the final price
