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28 February, 12:22

If f (x) = 3x - 10, which expression represents f (2x + 3) ?

A) 2x - 1

B) 6x + 19

C) 6x + 1

D) 6x - 1

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Answers (1)
  1. 28 February, 12:34
    0
    You just have to put 2x + 3 in wherever there is an x.

    So, f (2x+3) = 3 (2x+3) - 10

    =6x+9-10

    =6x-1

    The answer is D
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