Answer: your answer would be A
Step-by-step explanation:
= 7 2/5 - 1 4/5
= 37/5 - 9/5
= 28/5
In short, Your Answer would be: 28/5 or 5 3/5
Hope this helps!
The standard form of a cosine function is 
Where A Amplitude (height), b is period, C is phase shift, D is vertical shift. We are given the Amplitude, Period and Midline. Midline means the same as phase shift. So, the function formed will be
16-2r=3r+1
-16. -16
2r=3r-15
-3r. -3r
-r=-15
/-1. /-1
r=15
