Please help ty asap :>

For #7 it’s none, both of them have the same amount of books.

8. Is C

9. Associative property is a rule in math that explains that the way factors are grouped in a multiplication problem doesn’t affect the answer or change it. For example 4x25x27, if you wrote it as 25x4x27 the answer would still be the same.

Y= (2x) /5 - 6step by step(2x)/5 - y = 6- y = -2/5 (x - 15)answer: || y = (2( x - 15 )) /5