Question

Given: f(x) = 3x2 + 2x – 1

What is the value of f(5)?

A. 39
B. 84
C.234
D. 624

Answer 1

84

Explanation:

f(x) = 3x^2 + 2x – 1

Let x=5

f(5) = 3(5)^2+2(5) -1

= 3*25 +10-1

= 75+10 -1

= 85 -1