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27 January, 20:03

A student needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. The function f (r) relates the area of the cardboard piece, in square inches, to the radius r in inches. Which of the following shows a reasonable domain for f (r) ?

A) 7 < r < 14

B) 154 < r < 616

C) all positive integers less than 7

D) all positive integers between 14 and 154

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Answers (1)
  1. 27 January, 21:23
    0
    A is the only reasonable answer ...
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