Question

For f(x) = 4x +1 and g(x) = x -5, find (f og)(4).

Answer 1

Explanation:

f(x)=4x+1

g(x)=x-5

fog(4)=?

now,

fog=f(x-5)

=4(x-5)+1

=4x-20+1

=4x-19

Again,

fog(4)=4(4)-19

=16-19

=-3