Solve the problem.Devon purchased tickets to an air show for 7 adults and 2 children. The total cost was 
. The cost of a child's ticket was 
less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.
A. adult's ticket: $12; child's ticket: $9
B. adult's ticket: $15; child's ticket: $12
C. adult's ticket: $13; child's ticket: $10
D. adult's ticket: $14; child's ticket: $11
Answer: C
Mathematics
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Rewrite the following using radicals; then simplify if possible. Assume that all variables represent nonnegative values.23s1/2
A. 
B. s
C. 23
D. 23s
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Solve the quadratic equation by completing the square.x2 + 12x + 22 = 0
A. {-12 + 
}
B. {6 + 
}
C. {-6 - 
, -6 + 
}
D. {6 - 
, 6 + 
}
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Solve the differential equation.
Mathematics