Evaluate the sum using the given information.x1 = -1, x2 = 5, x3 = -5, x4 = 4, and?x = -0.9; f(x) = 3x2 - x

A. -23.2056
B. -177.2
C. -712.8
D. -178.2

Answer: D

Mathematics

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Solve.Salespeople for a home remodeling center receive an 8% commission on anything sold. They do not receive a commission on the sales tax. If a salesperson sold a kitchen cabinet and countertop package for $885.65 which included a 6% sales tax, what was her commission?

Fill in the blank(s) with the appropriate word(s).

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Mathematics

Suppose that y is inversely proportional to x. Use the given information to find the constant of proportionality k. Then use y = to find y for the given value of x.y = 32 when x = 9;Find y given x = 2.

A. k = 72; y = 36
B. k = 144; y = 72
C. k = ; y =
D. k = 288; y = 144

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Mathematics

Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = 4x-1 - 1; relative to f(x) = 4x

A. Moved right 1 unit(s);
moved up 1 unit(s)

B. Moved left 1 unit(s);
moved down 1 unit(s)

C. Moved right 1 unit(s);
moved down 1 unit(s)

D. Moved left 1 unit(s);
moved up 1 unit(s)