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natta225 [31]
3 years ago
6

You are the treasurer for a local charity. At the beginning of the month the balance was $820.64. The charity received donations

of $500.00, $55.00 and $25.00. You have an electric bill of $40.64, bill for postage of $12.75, and rent for $445.00.
What is the balance in the bank at the end of the month?
Mathematics
2 answers:
DanielleElmas [232]3 years ago
8 0
<span>The balance in the bank at the end of the month is...
$902.25

</span>
dsp733 years ago
3 0
<span>ed donations of $500.00, $55.00 and $25.00. You have an electric bill of $40.64, bill for postage of $12.75, and rent for $445.00</span>
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Explanation:

We have y = -0.9x^2 + 76x - 250 which is in the form y = ax^2+bx+c

where,

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The vertex (h,k) is when the profit is maxed out.

h = -b/(2a)

h = -76/(2(-0.9))

h = 42.222 approximately

Let's plug in x values around x = 42

Try x = 41

y = -0.9x^2 + 76x - 250

y = -0.9(41)^2 + 76(41) - 250

y = 1353.10

Now try x = 42

y = -0.9x^2 + 76x - 250

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