Simplify the expression.-8z - (-4z)

A. -4z2
B. -12z
C. -4z
D. 4z

Answer: C

Mathematics

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Factor, if possible.d3 + 216

A. (d + 6)(d2 - 6d - 36) B. (d + 6)(d2 - 6d + 36) C. (d + 6)(d2 + 6d + 36) D. (d + 6)(d2 + 36)

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Mathematics

Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.f(x) = (x + 3)2

A. vertex: (0, 3)
axis of symmetry: x = 0

B. vertex: (3, 0)
axis of symmetry: x = 3

C. vertex: (-3, 0)
axis of symmetry: x = -3

D. vertex: (0, 0)
axis of symmetry: x = 0

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Mathematics

Expand.(x - )5

A. x5 - 5x4 + 70x3 - 70x2 + 245x - 49
B. x5 - 5x4 + 70x3 - 70x2 + 245x - 49
C. x5 - 5x4 + 70x3 - 70x2 + 49x - 49
D. x5 - 5x4 + 7x3 - 70x2 + 245x - 49

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Mathematics

Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points.  Objective Function: z = -5x - yFind maximum.

A. maximum: -22 B. maximum: -18 C. maximum: -15 D. no maximum

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Mathematics