Add or subtract by first simplifying each radical and then combining any like radicals. Assume that all variables represent positive numbers.x + 7 - 3x

A. 13x
B. 13x
C. 4x
D. 4x

Answer: A

Mathematics

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Find the linear approximating polynomial for the function centered at a.f(x) = , a = 0

A. p1(x) = - x
B. p1(x) = x
C. p1(x) = x
D. p1(x) = - x

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Solve the systems of equations using the addition method.

A. (5, 1) B. (1, 5) C. All ordered pairs along 2x - y = 9 D. No solution

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Decide whether or not the matrices are inverses of each other. and 

A. Yes B. No

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Graph the inequality.y ? - 5x

A.

B.

C.

D.

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Mathematics