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maksim [4K]
2 years ago
7

You deposit $3000 in a bank account that pays 4% annual interest. Find the balance after 7 years if the interest is compounded q

uarterly.​
Mathematics
1 answer:
Stels [109]2 years ago
7 0

Answer:

$3840.

Step-by-step explanation:

First, write down the formula: I= PRT (Interest= Principle, rate, time). Then you multiply all of the numbers (3000x0.04x7). You get 840, but then you need to add it to the $3000 which already exist, therefor you get your answer of $3840.

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Three packages of pens and one box of paper cost $26. Two packages of pens and 7 boxes of paper cost $49. How much does one box
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Answer:

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Step-by-step explanation:

Let's call the price of a package of pens n, and the cost of a box of paper r.

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Multiply the first equation by 7:

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Subtract the second equation from the first:

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Divide both sides by 19 to isolate n:

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Plug this back in to find the value of a box of paper:

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Hope this helps!

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