Plot the point in a polar coordinate system.
A. 
B. 
C. 
D. 
Answer: A
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Use Gauss-Jordan elimination to find the solution. Write the solution as an ordered triple. 6x + 7y - z = 76 x + 7y - 3z = 19-7x + y + z = -53
A. (-9, 6, 4) B. (9, 4, 6) C. (9, 6, 4) D. (-9, 4, 18)
Find the indicated term for the geometric sequence.
, 
, 
, . . . ; a9
A. 
B. 
C. 
D. 
Solve the problem.One side of a rectangle is 5 inches and the other side is x inches. What values of x will make the perimeter at least 38?
A. x < 14 B. x ? 14 C. 0 < x ? 14 D. x ? 14
Solve the problem.The diagram shows the roads connecting four cities.WX
YZHow many ways are there to travel between cities W and Y by passing through exactly two cities? (Hint: Write a matrix, A, to represent the number of routes between each pair of cities without passing through another city. Then calculate A2 and A3).
A. 16 B. 14 C. 15 D. 13