Answer:
i got -8 but the closest is -7 so u can tried that
Step-by-step explanation:
1) I'm not sure what an open operation is.
2) D
3) No
4) Yes
5) D
6) hmm
7) there doesn't seem to be a 6 or 7
8) C
Answer:
I think its c?
Step-by-step explanation:
Im sorry if its wrong.
Answer:
Option B
Step-by-step explanation:
Here we have to apply " combination and permutation. " It is given that the drama club had to choose three booths from a selection of 9, considering the possible ways to choose so. This is a perfect example of combination. In nCr, n corresponds to 9, respectively r corresponds to 3.

Hope that helps!
Because the lines are parallel, 75 is equal to 11x-2
75=11x-2
77=11x
x=7