Answer:
B. 
Step-by-step explanation:
Converting 60 hours to days:
24 hours = 1 day
60 hours = x day
Cross multiply

Divide both sides by 24 hours

Thus,

The expression that shows how to convert 60 hours to days is:

Answer:
A
Step-by-step explanation:
A is a geometric sequence with common ratio - 1.
Answer:
B
Step-by-step explanation:
The answer is A)1/2[sin(4x)+sin(2x)]