Answer:
$7.50
Explanation:
She paid $30 for herself(1) and 2 friends = 3 tickets
30-6(popcorn)=24-3(drinks)-22+7.50=29.50/3= $7.50
9.5 dollars per ticket
to start you have to add 7.5 to 30 dollars to get how much it would have cost normally you get 37.5. next subtract 9 dollars. 6 for the popcorn and three for the drinks. you get 28.5 then devide by three to get the cost of one ticket at 9 dollars and 50 cents hope this helped. if you have any more questions feel free to message me
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