Evaluate the algebraic expression.5x - 9ywhen x = -3 and y = -1

A. 22
B. 12
C. 4
D. -6


Answer: D

Mathematics

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Perform the indicated operation.(9a4 - 5a3) + (8a4 + 8a3)

A. 17a8 + 3a6 B. 20a7 C. 20a14 D. 17a4 + 3a3

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Find the root form of the polynomial function f whose real roots and y-intercept are given on the graph.

A. f(x) = -2(x - 2)(x + 1) B. f(x) = (x - 2)(x + 1) C. f(x) = (x + 2)(x + 1) D. f(x) = (x + 2)(x - 1)

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Find the determinant of the given matrix.

A. 5 B. -12 C. 12 D. -14

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Graph the particular solution and several other solutions.

2y" + 3y' + y = 2 + cos 2x

Mathematics