Answer:
.
Step-by-step explanation:
To find a percentage of a number, multiply by the decimal form of that percentage(20%=0.20). So, take the cost, $430, and multiply by common state sales tax (7% for me)---430 x 0.07 = 30.10 The sale tax rate is 7%.
If 4·10= 40 then 4·-10 would equal -40 bc a positive times a negative equals a negative.
Hope this helped!!
w o w 100 points! t h a n k s :D
