Step-by-step explanation:
hi im not really sure if this is right
C. Buying it a percent discount without sales tax.
Because of not having to pay $10, so it is awesome.
A) K=1/2C-3
K+C=18
Hope this helps! Have a great day :)
66.6667
20=x/100•30
Solve this equation and you will get your answer (66.6667)