Maya runs 7 miles in 80 minutes. At the same rate, how many miles would she run in 64 minutes?
2 answers:
Answer:
5.6 miles
Step-by-step explanation:
Let's set up a proportion using the following setup.
We know Maya can run 7 miles in 80 minutes.
We don't know how many miles she can run in 64 minutes. Let's say she can run x miles in 64 minutes.
We want to solve for x (miles in 64 minutes). Therefore, we must isolate x on one side of the equation.
x is being divided by 64. The inverse of division is multiplication. Multiply both sides of the equation by 64.
Maya can run 5.6 miles in 64 minutes.
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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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