Write the expression in the standard form a + bi.If w = 9 + 7i, evaluate w - .

A. 18
B. 0
C. 14i
D. -18 + 14i

Answer: C

Mathematics

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Find the convergence set for the given power series. Hint: First find a formula for the nth term; then use the Absolute Ratio Test.5x + 10x2 + 15x3 + 20x4 + . . .

A. -1 ? x ? 1 B. -1 < x < 1 C. <-a> < x ? D. All x

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Convert.46 oz to pounds

A. 736 lb B. 3.833 lb C. 2.875 lb D. 3.286 lb

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Graph the system of linear inequalities.6y - x ? 8,-y + 3x ? 6,x ? 0

A.

B.

C.

D.

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Solve the equation. + = 2

A. - 1, -4 B. 2, 4 C. - 1, 4 D. 1, -4

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Mathematics