Simplify.
A. 5
B. 10
C. 2
D. 25
Answer: C
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Solve the problem.There are 3 cards in a hat; one is a king, one is a queen, and one is an ace. Two cards are to be selected at random without replacement. Using a tree diagram , obtain the sample space for the experiment. Then, find the probability that you choose the same card twice.
A. 0
B. 
C. 
D. 
Solve the system of equations by elimination, if a solution exists.
A. No solution B. x = 0, y = 0 C. x = 30, y = -15 D. x = -30, y = 15
Find the sum.13 + [14 + (-16)]
A. -17 B. 15 C. 11 D. 43
Solve the problem. Round your answer to two decimal places.The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 
per hour?
A. 154.05 ft B. 142.09 ft C. 141.75 ft D. 121.5 ft