Question

What is f(5) for f(x)=4x^2-5x+2?
A)-24
B)77
C)127
D)150

Answer 1

B. 77

Explanation:

Just change all the "x" with 5.

So, it'd be like

f(x) =
`4(5)^(2) - 5(5) + 2`

f(x) = 77

Answer 2

B)77

Explanation:

f(x)=4x^2-5x+2

Let x=5

f(5) = 4(5)^2 -5(5) +2

= 4*25 -25 +2

=100 -25+2

=75+2

=77