Let x represent the number of guests you will invite to the party, and let y represent the price per bowler at the bowling alley.
For Bowling Alley A:
y = 20 + 2x
For Bowling Alley B:
y = 25 + 3x
For Bowling Alley C:
y = 30 + 4x
To determine how many guests you can invite to your party, you need to solve for x when the total cost is $500.
For Bowling Alley A:
20 + 2x = 500
2x = 480
x = 240 guests
For Bowling Alley B:
25 + 3x = 500
3x = 475
x = 158 guests
For Bowling Alley C:
30 + 4x = 500
4x = 470
x = 117 guests
Therefore, you can invite a maximum of 240 guests at Bowling Alley A, 158 guests at Bowling Alley B, and 117 guests at Bowling Alley C within your $500 budget.