Question 403664
 A child's ticket costs $15 and adult tickets cost $20. The station wants to spend no more than $800 on tickets. They also want the number of child tickets to be greater than twice the number of adult tickets. 

How do I graph the system of four inequalities to show possible numbers of tickets that the station can buy? 
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Let y be number of child tickets.
Let x be the number of adult tickets.
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Value: 15y + 20x <= 800
y <= (-4/3)x + (160/3)
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Quantity: y > 2x
x >= 0
y >= 0
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Cheers,
Stan H.
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