Answer:
Step-by-step explanation:
the answers are
A.
C.
D.
E.
Plug x-7 in for y, in the bottom equation.
x - 7 = 2 + 2x - 4
x - 7 = 2x - 2
x = 2x + 5
-x = 5
x = -5
20/x
speed = distance /time
x km/h is speed
20 km is distance
x= 20/t
t= 20/x
You're going to have to take a better quality picture. I don't think anyone can reliably read any of that
Let the cost price be x
