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26 September, 16:50

Raffle tickets are being sold for a fundraiser. The function al n) relates the

amount of money raised to the number of tickets sold, n.

It takes as input the number of tickets sold and returns as output the amount

of money raised.

an) = 3n-30

Which equation represents the inverse function n (a), which takes the money

raised as input and returns the number of tickets sold as output?

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Answers (1)
  1. 26 September, 19:59
    0
    The answer is

    N (a) = (a + 25) / 4

    Step-by-step explanation:

    If the function is

    A (n) = 4n - 25

    and we wish to get the inverse function N (a)

    We let

    A (n) = a

    n = N (a)

    Plugging in the values

    a = 4 N (a) - 25

    Arranging the equation:

    4 N (a) = a + 25

    N (a) = (a + 25) / 4
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