Solve. x + y + z = -5 x - y + 3z = -195x + y + z = -13
A. (-2, 2, -5)
B. (-5, 2, -2)
C. (-2, -5, 2)
D. (-5, -2, 2)
Answer: A
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Write an algebraic equation and use it to solve the problem.Sergio's internet provider charges its customers $8 per month plus 5¢ per minute of on-line usage. Sergio received a bill from the provider covering a 
period and was charged a total of $59.50. How many minutes did he spend on-line during that period? (Round to the nearest whole minute, if necessary.)
A. 367 minutes B. 247 minutes C. 870 minutes D. 87 minutes
Find the unknown length in the space figure.Find the distance x. Give an exact answer.
A. 
B. 
C. 
D. 
Answer the question about the given function.Given the function f(x) = 
, is the point (1, - 3) on the graph of f?
A. Yes B. No
This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:More than 50 years of age
A. 15 B. No answer possible C. 42 D. 28