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ipn [44]
3 years ago
11

Kelly spends $87.32 on items for a party. She buys thank you cards that cost $4.12 (including tax). She also buys gift bags that

cost $10.40 each. If she buys one gift bag for each guest, how many guests did Kelly invite to the party?
A.
6
B.
10
C.
8
D.
9
Mathematics
1 answer:
ehidna [41]3 years ago
4 0
6 is the answer. If you add $10.40 and $4.12, then divide that from $87.32, you get 6.014.
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Answer:

<h3>#1</h3>

<u>The system of equations:</u>

  • 2x + 7y = -11
  • 3x + 5y = -22

Solve by elimination.

<u>Triple the first equation, double the second one, subtract the second from the first and solve for y:</u>

  • 3(2x + 7y) - 2(3x + 5y) = 3(-11) - 2(-22)
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<u>Find x:</u>

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<u>The solution is:</u>

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<h3>#2</h3>

<u>Simplifying in steps:</u>

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