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f x = x+b For the linear function f, b is a constant. = 0 = 30 When x, f x. What is the value of b? −30
Correct answer: D (parsed from the explanation — this source omits an answer key for this item)
Explanation
= =30 Choice D is correct. It’s given that when x 0, f^xh . Substituting 0 for x and 30 30=0+ 30= for f^xh in the given function yields b, or b. Therefore, the value 30 of b is . Choice A is incorrect and may result from conceptual or calculation errors. Choice B is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. 35 SAT PRACTICE TEST #6 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n MATH: MODULE 1
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