Answer:
The final cost for the stereo is $2,000.9
Step-by-step explanation:
first multiply 2,200 by 0.15 to find how much is discounted from the original price, 330 is discounted from the original price 2,200 minus 330 is 1,870 then multiply 1870 times 0.07 to find how much is added to the price, it is 130.9, 130.9 plus 1870 is 2,000.9.