Can someone help me with my math homework, numbers 6,8, and 9? Please :)

Answer:
Step-by-step explanation:
8) Take the cost that amelio spent-287.50 and multiply it by 0.15
287.50x0.15%=43.125.
Then, to figure out the cost he paid last year, subtract the 43.125 to ur original cost.
287.50-43.125=$244.375
9) 76.49x0.15%=11.4735
76.49+11.4735=87.9635
Hope this helps!