Question

Evaluate F(x)=4x+5 when x=4
f(4)=

Answer 1

21

Explanation:

F(X) = 4x + 5

One is asked to find (F(4)), substitute (4) in place of (x) and solve,

F(4) = 4(4) + 5

= 16 + 5

= 21

Answer 2

F(4) = 21

Explanation:

`F(4)=4(4)+5\\F(4)=16+5\\F(4)=21`