ANSWER

EXPLANATION
A basic sine curve has equation in the form:

Where 'a' is the amplitude.
In this case a=2 because the amplitude is 2.

For a transformed sine function, the general equation is:

where a=2 is still the amplitude

This is also a sine function with an amplitude of 2.
Others include:


e.t.c
F(0)=4-8x
f(0)=4-8(0)
f(0)=4
8/2 pound, simplified 4/1 pound
First solve for g(1)
Plug in 1 for the equation g(x)
g(1) = -(1) + 4
g(1) = 3
Now plug 3 in for f(x)
f(3) = 3(3)^2 + 4(3) + 1
f(3) = 3(9) + 12 + 1
f(3) = 27 + 12 + 1
f(3) = 40
Solution: f(g(1)) = 40