Answer:
b: f(x) = 5x+7
Explanation:
I just went down the line and entered in the numbers to see if they worked out.
12 = (5 x 1) + 7
12= 5 + 7
12 = 12
17 = (5 x 2) + 7
17 = 10 + 7
17 = 17
22 = (5 x 3) + 7
22 = 15 + 7
22 = 22
27 = (5 x 4) + 7
27 = 20 + 7
27 = 27