Question

Input 3 5 7 9
Output 11 17 23 29
Which function corresponds to the table of inputs and outputs?

f(x) = 3x + 1
f(x) = 3x + 2
f(x) = x + 7
f(x) = 2x + 5

Answer 1

The answer is B.

Answer 2

f(x) = 3x + 2
f(x) = 3(3) + 2
f(x) = 9 + 2
f(x) = 11

f(x) = 3x + 2
f(x) = 3(5) + 2
f(x) = 15 + 2
f(x) = 17

f(x) = 3x + 2
f(x) = 3(7) + 2
f(x) = 21 + 2
f(x) = 23

f(x) = 3x + 2
f(x) = 3(9) + 2
f(x) = 27 + 2
f(x) = 29