Answer the questionIf y varies inversely as the square of x, and x is tripled, how is y changed?
A. y is one-ninth as large as before
B. y is nine times as large as before
C. y is three times as large as before
D. y is one-third as large as before
Answer: A
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Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.3 + 12 + 27 + . . . + 108
A. 
B. 
C. 
D. 
Provide an appropriate response.A plumber uses a 
inch diameter copper tube wrapped with 
inch insulation. What size hole must be bored for the insulated pipe to pass through?
A. 1
B. 1
C. 1
D. 1
E. none of the above
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 8x - 5y - 4z = 207w + 6x - 8y - 4z = -18w - 8x + 6y + 5z = -34-5w - 4x + 8y + 8z = 1
A. (1, 5, 4, 2) B. (-1, 4, -5, 2) C. (-1, 5, 4, -2) D. No solution
State whether the vertex of the function is a maximum or minimum and give the corresponding maximum or minimum value of the function.f(x) = - 9x2 - 144x - 580
A. minimum: 0 B. minimum: 8 C. maximum: -4 D. maximum: 8