What is the value of the rational expression x/x2-9 when x = –3? a. -1/12 b. 0 c. 1/6 d. undefined

You're answer is D.
-3/-3(2)-9
1(2)-9
2-9
7
so it is D

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.

Your maths is very weak try yourself this would improve your skills don't depend on others