Precalculus question, image attached.

g(x)= x+1

Step-by-step explanation:

Given ,  

Replace x with g(x)

Now we need to find out what we plug in for g(X) to get x+3 under the radical

g(x) +2 is under the radical. we need x+3 , so we replace g(x) with x+`

So g(x)+2 becomes x+1+2 is x+3

Hence g(x) is x+1

answer:

c. the third graph

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10