Answer: C. 
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Explanation:
The x intercept always occurs when y = 0.
Use the unit circle to determine that
when 
So if
, then we have

which shows us that
is the location of one of the infinitely many x intercepts for this function.
The equivalent to 4/5 is 0.8.
Answer:
15/60.
Step-by-step explanation:
25/100 is 1/4 so a 4th of 60 would be 15. 1/4 = 1/4
Answer:
30 mins
Step-by-step explanation:
if you add 10 mins to 2:50, it makes it 3:00, then you just add the 10 mins + the 20 mins (after 3pm) and you get 30