Solve the problem.Devon purchased tickets to an air show for 9 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: $15; child's ticket: $9
B. adult's ticket: $17; child's ticket: $11
C. adult's ticket: $18; child's ticket: $12
D. adult's ticket: $16; child's ticket: $10
Answer: D
Mathematics
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Solve the equation. If the equation has no real solution, so state.
- 3 = 
A. No solution B. x = -5 C. x = 25 D. x = -25
Mathematics
Minimize the function
?
?
subject to the constraint 
.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 9 volts are applied, the current is 4 amperes. What is the current when 24 volts are applied?
A. 10.67 amp B. 2.25 amp C. 54 amp D. 37 amp
Mathematics
Simplify, if possible.
A. 
B. 
C. 
D. x + 4y
Mathematics