Answer:
1: 12x + 8
2: 21y - 3
3: 15p + 20r
Step-by-step explanation:
Answer:

Step-by-step explanation:
6x × x = 
6x × -2y = -12xy

Answer:
back where he started
Step-by-step explanation:
First he went up 30 feet.
Then he went -30 feet.
Meaning that he went up the went back down.
Which is basically 30-30
I think that should be right.
-4/3, 2/3, and 0 hope this helps
Your answer:
21 × 10 = 210