Solve the problem.There were 550 people at a play. The admission price was $2.00 for adults and $1.00 for children. The admission receipts were $860. How many adults and children attended?
A. 240 adults and 310 children
B. 120 adults and 430 children
C. 310 adults and 240 children
D. 215 adults and 335 children
Answer: C
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Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.The Wellspring Company's fleet of trucks get 20, 13, 19, 14, 20, 13, and 21 miles per gallon. What is the mean miles per gallon for the fleet? Round to the nearest whole number.
A. 16 miles per gallon B. 18 miles per gallon C. 20 miles per gallon D. 17 miles per gallon
Solve the problem.Draw a tree diagram for the experiment of spinning the spinner once then tossing a coin. 
A. 
B. 
C. 
D. 
Stones dropped into a calm pond at points A and B create ripples that propagate in widening circles. In the figure below, points A and B are 24 feet apart, and the radii of the circles differ by 4 feet. The point P (x, y) where the circles intersect moves along a curve. Find the equation of the curve.
?
?
A. 
B. 
C. 
D. 
E. none of these
Solve the linear equation using the multiplication property of equality.
x = 12
A. x = 
B. x = 
C. x = 
D. x = 14