- - - -_defined_by - - -_=_4x−3 - - ~ The function f is f x. What is 10 the value of f?
Correct answer: B (parsed from the explanation — this source omits an answer key for this item)
Explanation
=4 -3 Choice B is correct. It’s given that the function f is defined by f^xh x . 10 10 =4 10-3 Substituting for x in the given function yields f^ h ^ h , which is 10 =40-3 10 =37 10 37 equivalent to f^ h , or f^ h . Therefore, the value of f^ h is . Choice A is incorrect and may result from conceptual or calculation errors. 10 = Choice C is incorrect. This is the value of f^ h for the function f^xh 4x, not =4 -3 10 f^xh x . Choice D is incorrect. This is the value of f^ h for the function =4 +3 =4 -3 f^xh x , not f^xh x . 42 SAT PRACTICE TEST #5 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n MATH: MODULE 2
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