A) systematic
B) cluster
C) stratified
D) convenience
E) random
If you need explanation, just let me know!
Answer:

Step-by-step explanation:

Add 7 to both sides:
Multiply both sides by -1:
Divide both sides by 5:
_________________________________
Answer:
5, 240
Step-by-step explanation:
Answer:
11x-14xy
Step-by-step explanation:
3(2x- 3xy) + 5x-5xy
=6x-9xy+5x-5xy
=11x-14xy