Question

6. Let f(x) = 4x - 7 and g(x) = 2x - 3. Find (fog)(4)


sos idk how to solve this:)

Answer 1

`\huge\boxed{(f\circ g)(x)=8x-19}`

Explanation:

`(f\circ g)(x)=f\bigg(g(x)\bigg)\\\\f(x)=4x-7;\ g(x)=2x-3\\\\\text{Put instead}\ x\ \text{expression}\ 2x-3\ \text{to }\ f(x):\\\\(f\circ g)(x)=4(2x-3)-7=(4)(2x)+(4)(-3)-7=8x-12-7=8x-19`