Consider the function

MATHEMATICS · Single correct · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Consider the function y=−log⁡2(x−4)+3y=-\log_{2}(x-4)+3. Which of the following correctly describes its range? (a) (−∞,3](-\infty,3] (b) (−∞,∞)(-\infty,\infty) (c) [3,∞)[3,\infty) (d) (0,∞)(0,\infty)

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