Solve the system. x - y + 3z = -16-2x + 2y - 6z = -4 x + 2y + z = -12
A. (0, -4, -4)
B. (-4, 0, -4)
C. (-4, -4, 0)
D. No solution
Answer: D
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Solve the problem.A small city has 50 police officers to be apportioned among 8 precincts based on the population of each precinct. The populations are given in the following table. 
Find the apportionment for the Seventh Precinct using Adams' method.
A. 7 B. 6 C. 5 D. 4
Solve the equation.
= 2
A. {2}
B. 
C. {4}
D. ?
Solve the problem.Candy and Delvis are riding bicycles in the same direction. Candy is traveling at a speed of 9 miles per hour, and Delvis is traveling at a speed of 14 miles per hour. In 4 hours what is the distance between them (assuming that they began at the same point and time)?
A. 29 miles B. 17 miles C. 20 miles D. 21 miles
Solve the problem.A collection of dimes is arranged in a triangular array with 12 coins in the base row, 11 in the next, 10 in the next, and so on with 1 dime in the last row. Find the value of the collection.
A. $15.60 B. $0.78 C. $3.90 D. $7.80