For number 15-17;Given:f(x) =5x+1
15.what is the value of f(2)?
A. 11 b. 12 c. 13. D 14
16.what is the value of f(3)?
A.17 b. Q6 c. 18 d. 20
17.what us the value of f (0)?
A. 2 b. 3 c. 4 d. 1​