Given f (x) = 6x + 2, find f (x + 3).

Select one:

a. f (x + 3) = 6x^2 + 20x + 6

b. f (x + 3) = 6x + 5

c. f (x + 3) = 6x + 20

d. f (x + 3) = x + 5

6x+20

c.

Step-by-step explanation:

If f (x) = 6x+2 and you are asked to find f (x+3), then you just replace all the x's in f (x) = 6x+2 with (x+3).

Doing this gives you:

f (x) = 6x+2 with new input (x+3) in place of out input (x)

f (x+3) = 6 (x+3) + 2

f (x+3) = 6x+18+2

f (x+3) = 6x+20