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31 July, 04:40

Carla's retirement party will cost $15 if she invites 3 guests. If there are 4 guests, how much will Carla's retirement party cost? Assume the relationship is directly proportional.

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  1. 31 July, 07:40
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    If there are 4 guest Carla's retirement party will cost $20.

    Step-by-step explanation:

    First, you have to figure out how much money is needed for one guest;

    15:3 = $5

    Each guest costs $5. Now you just multiply by 5 by 4.

    Thus, the answer is $20.
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