Solve.Chris and Mary are selling tickets at their class play. Chris is selling student tickets for $1.00 each, and Mary selling adult tickets for $4.50 each. If their total income for 36 tickets was $95.50, how many tickets did Chris sell?
A. 19 tickets
B. 21 tickets
C. 22 tickets
D. 17 tickets
Answer: A
Mathematics
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A. 
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B. 
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C. 5
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D. 
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, find the exact value of f(a) + f(a + 2?) + f(a + 4?).
A. 
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B. 
C. 
D. 
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A. 
B. 
C. 
D. 
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