(Score for Question 2:
of 6 points)
2.
The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The
cost IS $22 for each room.
(a) Write a direct variation equation to represent the cost.
(b) How many rooms can a hotel pay the company to clean for $200? Write and solve an equation.
(c) Suppose the hotel plans to tip the carpet cleaners $40, how many rooms can the hotel get cleaned for
$200 now? Write and solve an equation.
Answer:
I