Answer:

Step-by-step explanation:
Since the slope is -5 is either C or D. Let's replace
in either to see what we get.
C:
Nope.
D:
Good!
Use the distributive property backwards.
xp+yp=z become p(x+y)=x, which solves to p=x/(x+y)
Answer:
3rd
Step-by-step explanation:
If you know about linear eq. it's just a simple rule no worry
Answer:
20 dollars
Step-by-step explanation:
Answers: (x, y, z) = (1, 2, -1)
Solving Steps: