C. Height versus age. Height (cm)
160
160
160
160
160
160
Age (years)
20
25
30
35
40
45
50
160
Function?
I
If so, Domain =
Range =
by

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

i believe the answer is letter c) 8

step-by-step explanation: