Answer:
cant see full image
Step-by-step explanation:
Expand out, this literally just wants you to multiply everything by -1.
so 7*-1 = -7
-c*-1 = c
thus putting them together to get -7+c which is just c-7
Answer:
0.10
Step-by-step explanation:
10 books cost $30. To figure it out, it's just 3 times the number of books. XD