Sorry hagrid, cant help ye out on this one bud
I think it is y=35 because u multiply both sides by 5 move the variable right then the final solution is
Answer:
B
y = 3 cos (pi/12x - pi/4) + 17
Step-by-step explanation:
First find the average temperature which is 20 + 14/2 = 17
Find the amplitude
20 - 17 = 3
This means that that at noon, the shift is 3hrs past
the best equation that represents this scenario is 
Answer: the pitch of the roof is 2/9
8 can go into 71 seven times