Question

help!! precalc!!

Answer 1

help greatly appreciated always!:)

Answer 2

pleasee

Answer 3

The graph is one of the ones on the right. I can't see it right, but when t = 200, y should be near 50. I think that it's the one in the top right.

Answer 4

Also, the coldest day has periodicity
t = (39/4) * 365n. Pick a n, say 0, the coldest day is 39/4, round it to 40/4 = 10. I think that it's what it's asked. The lowest T will be when sin(a) = -1, that is, T = -22. Solve for x.

Answer 5

Typo: solve for t.