Answer:
-13
Step-by-step explanation:
its counting odd numbers in order but switching their positive and negative
So, we know that:

We also know that
. We will use that fact to find
in terms of
and
.

Therefore:

Answer:
It's 1/2,-2 just did the math.
Answer: The correct answer is C. 13/32
Step-by-step explanation: There are 32 students, and 11 + 8 = 19. SO in order to figure out how many students used blue, we need to subtract 19 from 32. that gives us 13. So:
13 out of 32 students, or
13/32