Plot the point.(4, -1)

A.

B.

C.

D.

Answer: D

Mathematics

Solve the system by substitution.x + y = 4x - 2y = 21

A. {(-6, -8)} B. {(6, -8)} C. {(-6, 8)} D. {(6, 8)}

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Mathematics

Simplify. Express the final answer in exponential form.x7 ? x8 ? x8

A. x15 B. x16 C. x64 D. x23

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Mathematics

Multiply.(7a)(6a)

A. 13a2 B. 42a2 C. 7a + 6a D. 42a

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Mathematics

Find the greatest common factor of the monomials.x4y5, x5y3, and x6y4

A. x3y4 B. xy C. x4y4 D. x4y3

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Mathematics