Answer:
Well, 4 doubled is 8, and with a unit rate it would be 8/1!
Step-by-step explanation:
y = 2(x-a)/x
xy = 2x-2a
xy-2x = -2a
x(y-2) = -2a
x = (-2a)/(y-2)
Answer: 7.5
Step-by-step explanation: i hope this helps have a nice day god bless