Solve the system, if possible.
A) x = 8, y = –6, z = 3
B) x = 6, y = –7, z = 3
C) x = –6, y = 7, z = –3
D) x = 1, y = –12, z = 3
E) no solution; inconsistent system
C) x = –6, y = 7, z = –3
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Solve the problem.After spending $2150 for tables and $3750 for chairs a convention center manager finds that the furniture cost 4% more than last year. Find the amount that he spent last year on tables and chairs. Round to the nearest dollar.
A. $236 B. $3906 C. $5673 D. $6146
Find the sum without the use of a number line.(-3) + 4
A. -7 B. 1 C. -1 D. 7
Solve the equation.
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The stack plot below shows the value of each of Danny's investments. The stack plot contains three regions. The uppermost unshaded region represents the value of Danny's investment in individual stocks. The center shaded region represents the value of Danny's investment in mutual funds and the bottom region in black represents the value of Danny's investment in a CD. The thickness of a region at a particular time tells you its value at that time. 
Use the graph to answer the question.In which year was the value of Danny's investment in individual stocks the least?
A. year 0 B. year 7 C. year 1 D. year 8