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26 April, 18:55

Find f (5). f (x) = x2 + 2x A) 15 B) 20 C) 30 D) 35

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  1. 26 April, 19:34
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    f (5) means to replace x in the equation with 5 then solve.

    f (x) = x^2 + 2x

    f (5) = 5^2 + 2 (5)

    f (5) = 25 + 10

    f (5) = 35

    The answer is D) 35
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