Answer: x=10
This is the answer I got.
Answer:
the right answer would be 13
Answer:
Changing value of "d" changes the vertical shift of the cosine graph.
Step-by-step explanation:
Question says to find about how does your cosine graph change when including the d-value.
General equation of cosine function can be given as:

In that formula, value of "d" gives vertical shift.
So changing value of "d" changes the vertical shift of the cosine graph.
3x + 9 = 90
3x = 90 - 9 = 81
x = 81/3 = 27
x = 27
Answer:
3 Degrees
Step-by-step explanation: