Solve the system of equations using determinants.0.9x + 0.4y = 0.70.2x - 0.8y = 4.6

A. (2.6, 9)
B. (2.6, -4.1)
C. (3, 9)
D. (3, -5)

Answer: D

Mathematics

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Solve and graph the solution set on a number line.|x + 8| ? 0

A. (-?, -8)

B. {8}

C. ?
D. {-8}

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Graph the function.f(x) = 3x

A.

B.

C.

D.

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Provide an appropriate response.For a certain system of two linear equations, the solution set is {-3, -10}, and  Find the values of Dx and Dy.

A. Dx = -81; Dy = -270
B. Dx = -3; Dy = -10
C. Dx = - ; Dy = - 
D. Dx = -270; Dy = -81

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Find the limit.

A. ?
B. -?
C. -
D. 0

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