The answers are:
3:d
4:c
5:b
6:c Note: I am not 100% sure.
Answer:

Step-by-step explanation:
÷ 
This equals;
(
).(
)
(5x -5) ÷ (x² - 2x
Simplifying this gives: 
Answer:
The answer is 7
Step-by-step explanation:
Because 7 times 3 will give you 21, just divide 21 by 3.
Y + 4 + 3(y+2) first distribute the 3
y + 4 + 3y + 6 then add like terms
4y + 10
therefore your answer should be 4y + 10