The ones with the same number under te radical sign
compare the numbers
A. 3 and 5, nope
B. 6 and 5, nope
C. 3 and 3 yep
D. 2 and 3, nope
answer is C
Notice the picture
we have, the opposite side
the angle
and we want the hypotenuse
so recall your SOH CAH TOA

which one has all that? low and behold, is Ms Sine,
so let's bother Ms Sine

make sure your calculator is in Degree mode, since the angle here is in degrees, as opposed to Radian mode
Answer:
A
outdoor temperature as a function of time
Step-by-step explanation:
If you put the temperture as a function of time, every passing hour or minute the tempurture decreases resulting in a decrease in your function.
This can also be shown in a graph were the tempuerture is the x and the time is the y. Each hour that passes the temputure goes down until night falls and the temputure reaches a constant rate of tempurture
30 is A to the second power 31 is X to the first power 32 is just M