Question

Solve f(x) = 2x + 2 what would f(x)=20

a. 20
b. 10
c. 9
d. 8​

Answer 1

C

Explanation:

Given f(x) = 2x + 2 and f(x) = 20, then equate right sides, that is

2x + 2 = 20 ( subtract 2 from both sides )

2x = 18 ( divide both sides by 2 )

x = 9 → C

Answer 2

the answer is c. 9

Explanation:

20=2x+2

18=2x

x=9