120$ will probally be it hope this helped
Answer:

Step-by-step explanation:
Since the amplitude of the cosine function is 2, I would put the multiply it by 2. There is no phase shift
The period is 1/2, so it would be 4pi
Plug them in into y=Acos(Bx), y=2cos(4pix)
3x=78+x-2 is the answer. Good luck on your homework!
Answer:3a. Stu ?
Step-by-step explanation: