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22 August, 13:25

Flower: Anthony decides to decorate a ballroom with r = 3n + 20 roses, where n is the number of dancers. It occurs to Anthony that the dancers always come in pairs. That is, n=2p, where p is the number of pairs. What is r as a function of p?

Can anyone explain the process of how to answer this problem?

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  1. 22 August, 13:52
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    r = 6p + 20

    Step-by-step explanation:

    given:

    r = 3n + 20

    also given that n = 2p

    substituting n=2p into the above equation

    r = 3n + 20

    r = 3 (2p) + 20

    r = 6p + 20
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