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Compound Interst Practice

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Last updated over 1 year ago
10 questions
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Directions:
Use the following formulas to help you on the below assignment. Use the calculator at https://www.desmos.com/scientific to help you calculate as well.
Question 1
1.

Suppose you have an investment of $1300 earning 5% interest compounded semiannually for 10 years.

What is the rate (after converting a percent to a decimal)?

Question 2
2.

Suppose you have an investment of $1300 earning 5% interest compounded semiannually for 10 years.

What is the n value, the number of times interest will be compounded per year?

Question 3
3.

Suppose you have an investment of $1300 earning 5% interest compounded semiannually for 10 years.

What is the t value, the number of years your account will earn interest?

Question 4
4.

Why is calculating compound interest on your basic 4 function calculator app a bad idea?

Question 5
5.

Use the calculator on Desmos.com/scientific to determine your answer:
Suppose you have an investment of $1300 earning 5% interest compounded semiannually for 10 years.
What will the balance be of the account after 10 years to the nearest cent?

Question 6
6.

Determine the final amount for an investment of $300 earning 4.52% interest compounded quarterly for 3 years.

Question 7
7.

Find the final amount for an investment of $5000 earning 6.3% interest compounded daily for 1 year.

Question 8
8.

Diana invests $800 today in an account earning 6% and compounded annually. How much will it be worth in 5 years? Round to the nearest dollar.

Question 9
9.

Diana's cousing invests $800 today in an account earning 6% and calculated using SIMPLE INTEREST. How much will it be in the account in 5 years? Round to the nearest dollar. (Remember, I=P*R*T is simple interest)

Question 10
10.

Given the same rate and time, will your account make more money with simple interest or compound interest?