Abandoned mines frequently fill with water. Before an abandoned mine can be reopened, the water must be pumped out. The size of
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Using compound interest and a graphing calculator, it is found that it will take about 15 years for the loan to be paid off.
<h3>What is compound interest?</h3>The amount of money earned, in compound interest, after t years, is given by:
In which:
- A(t) is the amount of money after t years.
- P is the principal(the initial sum of money).
- r is the interest rate(as a decimal value).
- n is the number of times that interest is compounded per year.
For this problem, the parameters are given as follows:
A(0) = 95000, r = 0.06, n = 12.
Hence the value of the loan after t years is:
You have monthly payments of $1,200, hence the amount paid after t years is:
P(t) = 12 x 1,200t = 14400t
Then we have to solve for:
A(t) = P(t)
Which is solved in the graph below, meaning that it will take about 15 years for the loan to be paid off.
More can be learned about compound interest at brainly.com/question/25781328
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