Write a cosine function that has a midline of 5, an amplitude of 3 and a frequency of 4/5

Step-by-step explanation:

Recall that a cosine function of the form has the following:

- amplitude A

- Frequeny .

- Phase shift

- Midline D

So, in our case, we know that A=3, (which implies that ) and D=5. Since we are not said everything about the Phase shift, lets asumme that the Phase shift is 0. Hence C=0.

Then, our desired function is

step-by-step explanation:

if x = 2 you have to find x to finish the problem