please help

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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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with what
1. (6 points)Elizabeth, Heather, and Erin share the same birthday. They’ve decided to join together to have one big birthday party. The event location says it will cost $70 for the rental of the space and $15 per guest. Each girl invites x number of guests, including themselves in their guest count. The girls have each written a different correct expression to represent the total cost of the party. EXPLAIN how each of the 3 expressions below represents the total cost. (a) Elizabeth’s expression: 15x + 15x + 15x + 70 (b) Heather’s expression: 15(x + x + x) + 70 (c) Erin’s expression: x(15 + 15 + 15) + 70

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The first is Elizabeth's expression, the second is Heather's, and the last is Erin's, so they're (a), (b), and (c), in that order. :)
Elizabeth finds the cost of each girl's guests and adds the rental cost, for a result of the total cost. Heather multiplies the cost per guest by the total number of guests, and adds the rental cost. This has the same result. Erin multiplies the amount of guests each girl invites with the price per guest, taking the price three times since three girls invite guests. Then, she adds the rental cost. Thus, all three equations are equal to the costs of the guests added to the rental cost, which is the full cost.
is that helpfull?
Hopes this helps!
thx guys @spring can you give the other guy a medal
thx
sure will

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