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12 August, 08:24

Find g (x) if it is known that g (5a) = 20a-9.

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  1. 12 August, 09:43
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    Step-by-step explanation:

    This is very short if you know the answer.

    g (5a) means that where ever you see x on the right, you put in 5a

    So g (5a) = b (5a) - 9 The 9 does not come into it.

    b*5a = 20a Divide by 5a

    b*5a/5a = 20a/5a

    b = 4

    So g (x) = 4x - 9
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