Solve the problem.Devon purchased tickets to an air show for 8 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: $24; child's ticket: $18
B. adult's ticket: $21; child's ticket: $15
C. adult's ticket: $23; child's ticket: $17
D. adult's ticket: $22; child's ticket: $16
Answer: D
Mathematics
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Solve the equation.log (x - 9) = 1 - log x
A. -10 B. -1, 10 C. 10 D. -10, 1
Mathematics
Solve the problem.How long will it take for prices in the economy to double at a 7% annual inflation rate? Round the answer to the nearest hundredth.
A. 16.24 years B. 10.24 years C. 9.01 years D. 23.45 years
Mathematics
Find the slopes of the lines that are (a) parallel to and (b) perpendicular to the line passing through the pair of points.(-3, -10) and (-1, 6)
A. (a) 8; (b) - 
B. (a) 
; (b) - 8
C. (a) - 8; (b) 
D. (a) 8; (b) - 8
Mathematics
Simplify.
? 
+ 
? 
A. 
B. 
C. 
D. 
Mathematics