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14 January, 08:17

A function is defined by f (x) = 5 (2-x). What is f (-1) ?

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  1. 14 January, 08:18
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    In the given function f (x) = 5 (2-x), subst. - 1 for x, obtaining f (-1) = 5 (2-[-1]) = 10.
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