Algebra Essentials Chapter 3 Test For problems 1-2, solve the equation. 1) x-12=13 2) 14=x-(-7) 3) You owe $34 to your sister. You gave her your allowance for the week, and now you only owe her $12. How much was your allowance? For problems 4-9, solve the equation. 4) 35a= -70 5) 5x+7-2x=22 7) 4(x+4)=8 For problems 11-12, solve the equation. 11) 1.5x+7.4=-1.8x-6.9 14) Solve the following equation for y: 7x+y=13 18) Mr. Lynch decides to go out for a nice seafood dinner. After dinner, his waiter brings him the bill and the total is $32.00 before tip. a) Find the amount Mr. Lynch should leave as a tip if he decides to tip 20%. b) What is the total bill including tip? EXTRA CREDIT: Solve the following equation. Show all work for credit.