Solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable. 8x - 2y + 3z = -55-32x + 8y - 12z = 220 40x - 10y + 15z = -275
A. ?
B. 
C. {(-4, 1, -7)}
D. 
Answer: B
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If Jack took 15 vacation days last year, what is the minimum number of years he must have worked for the company?
A. 8 B. 9 C. 11 D. 10
Solve the problem.You are traveling to your aunt's house that is 171 miles away. If you are currently twice as far from home as you are from your aunt's, how far have you traveled?
A. 85.5 miles B. 57 miles C. 114 miles D. 28.5 miles
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A. -76 + x B. -76 ÷ x C. x - (-76) D. -76 - x
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