Solve, using the substitution method, and check. 

A. (7, 15)
B. (-4, -12)
C. (9, 7)
D. (4, -12)
E. (-3, -9)


Answer: B

Mathematics

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Evaluate the integral.

A. ?3
B. 504?3
C. 1176?3
D.

1848?3?

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Solve the equation. + 62 = 80y -  - 79y

A. -79 B. 79 C. 15 D. -15

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Add or subtract. Assume that variables represent nonnegative values.12 + 15

A. 27
B.
C. 27
D. 27

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