Find this equation

Question

Find (f∘g)(1). f(x)=5x g(x)=3x

Answer 1

One way of rewriting (f o g)(1) is f(g(1)). Start with the inside most function and work your way outwards. So start with g(1). g(1) = 3(1) = 3. Now we take that answer, and plug it into the outside function. So f(3) = 5(3) = 15. Thus (f o g)(1) = 15.

Answer 2

f(x)= 5x g(x)=3x

fog=5(3x)

At f(1), 5(3*1)=15

Hope this helps.