Compound Interest Answers

12 verified answers
1
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Explain how compound interest is better than simple interest when it comes to saving money.

Answer:

Compound interest is better for saving because the interest you earn is added to your balance, and then you earn interest on that interest as well as on your original deposit. With simple interest, interest is earned only on the original deposit, so the balance usually grows more slowly over time.

3

Mariah is putting $5,270 into an account earning 3.75% interest compounded quarterly. She estimates that it will take just over 9 years for this investment to grow to $8,000. Which of the following is a true statement?

A
Mariah’s estimate of the time is too low.
B
Mariah’s estimate of the time is correct.
C
Mariah’s estimate of the time is too high.
D
Mariah does not have enough information to estimate the time.
5

Mariah is putting $5,270 into an account earning 3.75% interest compounded quarterly. She estimates that it will take just over 9 years for this investment to grow to $8,000. Which of the following is a true statement?

A
Mariah’s estimate of the time is too low.
B
Mariah’s estimate of the time is correct.
C
Mariah’s estimate of the time is too high.
D
Mariah does not have enough information to estimate the time.
12

Explain how compound interest is better than simple interest when it comes to saving money.

Answer:

With compound interest, you earn interest on interest, thereby accumulating more money than if you were earning simple interest.

15

A principal of $5,350 is placed in an account that earns 3.5% interest. If the interest is compounded annually, how much money will be in the account at the end of 4 years?

A
$5,760.06
B
$5,537.25
C
$6,099.00
D
$6,139.25
17

Cameron has decided to diversify his investments in the following way:$3,000 in an account earning 2.7% simple interest$5,000 in a savings account earning 1.8% interest compounded annually$5,000 in a certificate of deposit earning 3.9% interest compounded quarterlyHow much total interest will Cameron earn on his investments at the end of 3 years?

A
$530.87
B
$665.57
C
$973.30
D
$1,135.30

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