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31 August, 11:56

If f (x) = 2x - 5, then f (4) is

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  1. 31 August, 13:53
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    you must to replace x be 4.

    like this f (4) = 2 (4) - 5

    so 2*4 = 8

    and then 8-5=3

    so the final answer is f (4) = 3

    that all. All the best. hihi
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