Determine the amplitude (a), period (p), and phase shift (ps) of the function f(x) = 7cos (9x).

D) A=7,  , PS=(0,0) is correct.

Step-by-step explanation:

Given function is

Compare that with formula

we get:

A=7, B=9, C=0, D=0

In that formula, amplitude is given by formula |a|

Hence amplitude = |a|=|7|= 7

In that formula, period is given by formula

Hence period =

Phase shift is given by formula  

Hence phase shift =

So the last choice D) A=7,  , PS=(0,0) is correct.

answer: yes i agree that you should not put it on/p>

step-by-step explanation: the reason for this is that it wastes other peoples time and also make them fail as well and that is never good.

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)