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emmainna [20.7K]
3 years ago
13

Mario borrows $4800 for 8.5 years at a fixed rate of simple interest. At the end of that time, he owes $8000. What interest rate

is he being charged?
Mathematics
2 answers:
Fofino [41]3 years ago
3 0
The unknown is the interest rate.
The givens are the principal=$4800, time=8.5 years and amount=$8000(to find the interest, subtract the principal from the amount,$8000-$4800=$3200)so interest is $3200
The formula for finding rate is R=I*100/PT where R is rate, I is interest and P is principal and T is time.the 100 is there because R is a percentage.
R=$3200*100/$4800*8.5=7.8%(rounded to nearest tenth)
Therefore the interest rate is about 7.8%



Alexxandr [17]3 years ago
3 0

Answer:

Step-by-step explanation

The unknown is the interest rate.

The givens are the principal=$4800, time=8.5 years and amount=$8000(to find the interest, subtract the principal from the amount,$8000-$4800=$3200)so interest is $3200

The formula for finding rate is R=I*100/PT where R is rate, I is interest and P is principal and T is time.the 100 is there because R is a percentage.

R=$3200*100/$4800*8.5=7.8%(rounded to nearest tenth)

Therefore the interest rate is about 7.8%

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Explain how to use the unit rate to make a table​
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If one of the data points has the form \displaystyle \left(0,a\right)(0,a), then a is the initial value. Using a, substitute the second point into the equation \displaystyle f\left(x\right)=a{\left(b\right)}^{x}f(x)=a(b)

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If neither of the data points have the form \displaystyle \left(0,a\right)(0,a), substitute both points into two equations with the form \displaystyle f\left(x\right)=a{\left(b\right)}^{x}f(x)=a(b)

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if you could respond with the work shown that would be amazing! i rate people very nicely!! this is due before 7 AM EST time :)
yulyashka [42]

Answer:

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First lets try solving the rectangular middle part

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35ft squared is the answer.

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3 years ago
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