Answer:
f(g(x)) when x=9 would be -129/4
Step-by-step explanation:
First, you split the parts into two.
f(g(x)) and g(x). *Think of g(x) as the y of f, f(y).
Now you solve for g(x), where you would plug in 9, for the x.
(9)+3/4 which equals, 39/4.
Now you have solved for g(x), and you have to plug it into the "y" of f.
f(y) = y^2-4y-3
f(39/4) = (39/4)^2-4(39/4)-3
f(39/4) = -129/4
Your solution should be -129/4.
