Answer: Add 11 to the other side of the equation, giving you 81. Then, since x is square you are going to need to square root both sides (
this symbol). When you do that, you should get what x is! Let me know if you still need help!
15.25 divided by 100= 0.1525 times 15 = 2.2875 then round to $2.29 (2.29 is the tip) 2.29 + 15.25 = $17.54 would be the total cost!