Adding linear expressions. (add.) 1. (5x+7)+(x+2) +3)+(x-7) if you it would mean a lot to me!

Don't let the parenthesis fool you. Since there is a plus in the middle, you can just combine like terms. Let's do number 1:

Combine like terms.

This is as simple as you can get it. Now, let's do number 2:

Combine like terms.

This is as simple as you can get it.

Final Answers:

1.)

2.)

answer: 43/157

this is the answer and if you try to prove me wrong your a meanie

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value