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garri49 [273]
3 years ago
10

Garland put 2b+ 3 dollars in the bank in the first week. The following week he doubled the first week’s savings and put that amo

unt in the bank. The next week he doubled what was in the bank. If he now has $477 in Thebes bank, how much did he put in the bank the first week?
Mathematics
1 answer:
alexgriva [62]3 years ago
7 0
1st week: 2b + 3
2nd week: 2(2b + 3) = 4b + 6
3rd week: 2(4b + 6) = 8b + 12
If 8b + 12 is $477, $477 - 12 must be 8b. $477 - 12 = $465 / 8 = $58.125 / .13
2b + 3 = 2 x 58.13 + 3 = $116.26 + 3 =
$119.26 is your answer

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9514 1404 393

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  see attached

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A graphing calculator does this very nicely.

__

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