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Advanced Math
/ Nonlinear equations in one variable and systems of equations in two variables
Difficulty: Easy
A solution to the given system of equations is . What is the value of ?
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Explanation
Choice A is correct. The first equation in the given system of equations is . Substituting for in the second equation in the given system of equations yields , or . Substituting for and for in the expression yields , or . Therefore, the value of is .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.