F(x) = 5x – 3 and g(x) = 5x – 4, find (fog)(x).

(fog)(x) = 25x - 23

Step-by-step explanation:

(fog)(x) = f(g(x))  

This is an example of a composite function.

Simply substitute g(x) for x into the function f(x) and simplify.

f(g(x)) = f(5x - 4)  

Distribute 5 inside the parentheses.

Combine like terms.

(fog)(x) = 25x - 23

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

you can't solve x because it is 2 linear equation and you only have one equation