Answer:

Step-by-step explanation:
If the system contains
atoms, we can arrange
quanta of energy in
ways.

In this case,
.
Therefore,

which means that we can arrange 1 quanta of energy in 2 ways.

In this case,
.
Therefore,

which means that we can arrange 10 quanta of energy in 184 756 ways.

In this case,
.
Therefore, we obtain that the number of ways is

So the two possible original temperatures would be either -9 or 9.
I actually think its b cause it can't be d (thats obvious) yh........but i might be wrong
-7 + -5
When you add negative, it would be the same as subtracting
Turns into: -7-5
-(7+5) = -12
The solutions is -12
It is the second bubble because there can only be one x per y. For example, (1,3) and (1,4) isn't a function because the x which is 1 has too many y