The function g is defined by g ( x) = x^2 +9. For g(x) = 25 which value of x is?
Correct answer: A (parsed from the explanation — this source omits an answer key for this item)
Explanation
= 2+9 25 Choice A is correct. It’s given that g^xh x . Substituting for g^xh in this 25= 2+9 equation yields x . Subtracting 9 from both sides of this equation yields 16= 2 =! x . Taking the square root of each side of this equation yields x 4. It =25 - follows that g^xh when the value of x is 4 or 4. Only 4 is listed among the choices. 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.
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