- - - - - -_27 - - - - s+7r = r = 3 What is the solution (r,s) to the given system of equations?
Correct answer: B (parsed from the explanation — this source omits an answer key for this item)
Explanation
= Choice B is correct. The second equation in the given system is r 3. +73 =27 Substituting 3 for r in the first equation in the given system yields s ^ h , +21=27 21 = or s . Subtracting from both sides of this equation yields s 6. 3,6 Therefore, the solution ^r,sh to the given system of equations is ^ h. Choice A is incorrect. This is the solution ^s,rh, not ^r,sh, 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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