Answer:
Use the graph to write an equation
y = acos[b(x – h)] + k to model the situation.
The amplitude is
30
,
so a =
-30
.
The period is
12
,
so b =
✔ pi/6
.
The vertical shift is k =
50
The phase shift is h =
-1
Choose the equation of the graph
first option
Explanation: