Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.5x + 5y + 2z = -1520x + 21y + 9z = -110x + 11y + 5z = 15
A. 
B. 
C. 
D. No solution
Answer: D
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Determine any data values that are missing from the table, assuming that the data represent a linear function.
A. missing x: -3; missing y: -2 B. Missing x: -1; missing y: -1 C. Missing x: -2; missing y: -1 D. Missing x: -3; missing y: 0
Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that Q varies directly with x and inversely with y. When Q = 2, x = 24 and y = 108.
A. k = 9; Q = 
B. k = 9; Q = 
C. k = 9; Q = 
D. k = 9; Q = 9xy
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x2 + 6x + 5
A. vertex (3, -4)
intercepts (1, 0), (5, 0), (0, 5)
B. vertex (-3, -4)
intercepts (-1, 0), (- 5, 0), (0, 5)
C. vertex (-3, 4)
intercepts (-1, 0), (- 5, 0), (0, -5)
D. vertex (3, 4)
intercepts (1, 0), (5, 0), (0, -5)
Completely factor the polynomial or state that the polynomial is prime.64x2 + 144x + 81
A. (8x - 9)2 B. (8x + 9)(8x - 9) C. (8x + 9)2 D. (8x - 10)2