Answer:
A
Step-by-step explanation:
permutation are variations of a problem, but they are collecting movies and selecting 4 out of the 20 so it is combination
Answer:
I did this today and its H
Step-by-step explanation:
Please lmk if im wrong, but im sure its right but js ;)
No
for example (question 1),
3(2a - 5) you multiply the numbers inside the parenthesis ().
so it will be 6a - 15
And if there is a negative number in front of the parenthesis, you multiply that too
-1(2x-5) will be -2x+5
negative times negative will be positive!