The amount of money that Li spends on video games depends on how

many games he purchases. If Li has at most $90 to spend on games for his

Xbox 360 and the games cost $22.50 each, what is the domain of this

function?

x < 4

Step-by-step explanation:

The function is represented by this equation:

22.5x = y

Where x is the number of games he buys and y is the amount of money that he spends. We know that y cannot be greater than 90, because Li only has 90 dollars. So, if y is less than 90, 22.5x must be less than 90 as well.

22.5x < 90

x < 90/22.5

x < 4