Answer:
8% tax rate.
Step-by-step explanation:

The 8% (0.08) is the tax rate because the 100%, or 1.00, is the original price of the racket, which was $13.
<span>8 + 6 x 3 - (20/2)^2
</span><span>= 8 + 18 -(10)^2
</span>= 8 + 18 - 100
= -74
answer
- 74
The decrease rate is 33.3%
Solution : 32$ on sale , original price is 48%
The deceased rate is x
48 (1-X)=32
x= 0.333