Answer:
Final cost = $2388.75
Explanation:
Cost of stereo system = $2500
Sale = 9%
Cost of sale = 9% of 2500
Cost of sale =

Cost of sale = $225
Price after sale = 2500 - 225 = $2275
Sales tax = 5% of 2275
Sales tax = 0.05 * 2275 = $ 113.75
Final cost = 2275 + 113.75 = $2388.75