Answer:
8.9%
Step-by-step explanation:
sales tax rate (in percentage) = 409.40÷4600*100=8.9%
168. Use a calculator.
I advice you not to be mean, pls don't get me wrong. I'm just helping you save your points instead.
10x - 12 + 10 = 18 - 20
10x - 2 = -2
10x = 0
x = 0
r = - 18
multiply both sides by 3 to eliminate the fraction
3 × 6 = - r ⇒ 18 = - r ⇒ r = - 18