Avery is the owner of Game Planet which produces two types of gaming consoles - Model X and Model Y. Model X gaming consoles require 1 hour of wiring, 0.5 hours of testing, and 0.5 hours of packaging. Model Y gaming consoles require 2 hours of wiring, 1 hour of testing, and 0.75 hours of packaging. In the next production period, there are 500 hours of wiring available, 400 hours of testing available, and 150 hours of packaging available. The forecasted demand for Model X gaming consoles is 325 and the forecasted demand for Model Y gaming consoles is 440. The Model X gaming consoles result in a profit of 75 and the Model Y gaming consoles result in a profit of 125. If Avery were to state all of the constraints algebraically, how many constraints would they have listed?