Question

Consider the functions f(x)=−1.8cosx
and g(x)=−3.6cosx
. How do the amplitudes compare?(1 point)
Responses

The amplitude of g(x)
is two more than the amplitude of f(x)
.
The amplitude of g of x is two more than the amplitude of f of x .

The amplitude of g(x)
is two times the amplitude of f(x)
.
The amplitude of g of x is two times the amplitude of f of x .

The amplitude of g(x)
is 3.6 times the amplitude of f(x)
.
The amplitude of g of x is 3.6 times the amplitude of f of x .

The amplitude of g(x)
is half the amplitude of f(x)
.

Answer 1

Amplitude = |coefficient|. For f it's 1.8 and for g it's 3.6, and 3.6 = 2(1.8).

So: The amplitude of g(x) is two times the amplitude of f(x).