Answer:
C; right answer on Khan Academy
Step-by-step explanation:

if you have already covered slopes, you could also get it that way, in fact is simpler that way.
Answer:
27,824
Step-by-step explanation:
i just calculated it.
Answer:
d
Step-by-step explanation:
Answer:
4x-7=x+2
3x=9
x=3
3-50=-47
Step-by-step explanation: