s + 7r = 27 r = 3 What is the solution (r, s) to the given system of equations?

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Accepted Answer

Choice B is correct. The second equation in the given system is r = 3. Substituting 3 for r in the first equation in the given system yields s + 7(3) = 27, or s + 21 = 27. Subtracting 21 from both sides of this equation yields s = 6. Therefore, the solution (r, s) to the given system of equations is (3, 6). Choice A is incorrect. This is the solution (s, r), not (r, s), to the given system of equations. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.

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