Answer:
x
Step-by-step explanation:
Answer:

Step-by-step explanation:

•you divide both sides by 21 to leave x alone
F(7)=3(7)^2+3(7)
3(7)^2+3(7)=168
Which one is the length, height, and width? After you that then multiple and you should have your answer. Hope this helps!
Answer:
18 cents
Step-by-step explanation:
3.28/18 = .18