Is this a function or not a function and why. PLEASE HELP DUE IN 20 MINUTES

not a function

Step-by-step explanation:

the number 7 is used more than once

(srry if im wrong, i did these like a year ago)

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.

hope this !

let me know