Solve.If y varies inversely as the square of x. If y = 2 when x = 8, find y when x = 2.
A. 8
B. 16
C. 4
D. 32
Answer: D
Mathematics
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Find the specific function value.Find f(5, 0, 8) when f(x, y, z) = 5x2 + 5y2 - z2.
A. 65 B. -39 C. 61 D. 189
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Determine the indicated term in the given sequence.The 6th term of 6, 18, 54, . . .
A. 243 B. 1458 C. 4374 D. 13,122
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Factor.8z2 + 6z - 9
A. (8z + 1)(z - 9) B. (8z + 3)(z - 3) C. (2z - 3)(4z + 3) D. (2z + 3)(4z - 3)
Mathematics
Sketch the graph of the quadratic function. Give the vertex and axis of symmetry.f(x) = 1 - (x + 1)2 
A. vertex: (1, - 1)
axis of symmetry: x = 1
B. vertex: (- 1, 1)
axis of symmetry: x = - 1
C. vertex: (1, 1)
axis of symmetry: x = 1
D. vertex: (- 1, - 1)
axis of symmetry: x = - 1
Mathematics