SOLUTION: the price of refrigerator A is 600 and the price of refrigerator B Is 1200 the cost o electricity needed to operate the refrigerator is 50 per year for refrigerator A and 40 for re

Algebra ->  Rational-functions -> SOLUTION: the price of refrigerator A is 600 and the price of refrigerator B Is 1200 the cost o electricity needed to operate the refrigerator is 50 per year for refrigerator A and 40 for re      Log On


   



Question 808196: the price of refrigerator A is 600 and the price of refrigerator B Is 1200 the cost o electricity needed to operate the refrigerator is 50 per year for refrigerator A and 40 for refrigerator B what is the equation of refrigerator A and B ?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
not real sure what your asking but:
total cost of refrigerator A = x
total cost of refrigerator B = z
amount of years = y
x=600%2B50y
z=1200%2B40y
if there is an amount of years to which refrigerator would be cheapest you could solve for each cost and find out.
say 10 years which would be cheapest?
highlight%28x=1100%29
z=1600
say 50yrs?
highlight%28x=3100%29
z=3200
say 100years?
x=5600
highlight%28z=5200%29