Final answer:
To find the value of [fo(h o g)](1), substitute the given functions f(x), g(x), and h(x) into the expression and evaluate it at x = 1. The result is 72.
Step-by-step explanation:
To find the value of [fo(h o g)](1), we need to substitute the given functions f(x), g(x), and h(x) into the expression and evaluate it at x = 1.
First, let's find the value of h o g:
h o g(x) = h(g(x))
= h(x+4)
= (x+4)^2 - 1
= x^2 + 8x + 15
Next, let's find the value of fo(h o g):
fo(h o g)(x) = f(h o g(x))
= f(x^2 + 8x + 15)
= 3(x^2 + 8x + 15)
Finally, substitute x = 1 to get the final result:
[fo(h o g)](1) = 3(1^2 + 8(1) + 15)
= 3(1 + 8 + 15)
= 3(24)
= 72