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Ilya [14]
3 years ago
15

Zoya has to eran a least $300 to meet her fundraising goal. She has only 100 bracelets that she plans to sell at $5 each. What i

nequality shows the number of bracelets, x, Zoya can sell to meet her goal?
Mathematics
1 answer:
andriy [413]3 years ago
8 0
She'll need to sell 60 to meet her goal
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The admission fee at an amusement park is $3.50 for children and $7.00 for adults. On a certain day, 331 people entered the park
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Let c be children and a adults.

3.5c + 7a = 1771 (the total revenue is equal to the amounts made off of people)

c + a = 331 (total number of people)

The second formula becomes a = 331 - c. This can be substituted into the first formula.

3.5c + 7(331 - c) = 1771 = 7*331 - 3.5c = 1771. 7*331 = 2317, so 3.5c = 2317 - 1771 = 546.

546/3.5 = 156 = c (number of children).

c + a = 156 + a = 331 => a = 331 - 156 = 175 (number of adults).

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