# 10.6 Compound Interest

What principal will amount to $3500 if invested at 4% interest compounded quarterly for 5 years? What principal will amount to$2000 if invested at 4% interest compounded
semiannually for 5 years?

A thousand dollars is left in a bank savings account drawing 7% interest,
compounded quarterly for 10 years. What is the balance at the end of that
time?

An 8.5% account earns continuous interest. If $2500 is deposited for 5 years, what is the total accumulated? What principal will amount to$1750 if invested at 3% interest compounded
quarterly for 5 years?

$1750 is invested in an account earning 13.5% interest compounded monthly for a 2 year period. What is the balance at the end of 9 years? Find each of the following: a.$500 invested at 4% compounded annually for 10 years.
b. $600 invested at 6% compounded annually for 6 years. c.$750 invested at 3% compounded annually for 8 years.
d. $1500 invested at 4% compounded semiannually for 7 years. e.$900 invested at 6% compounded semiannually for 5 years.
f. $950 invested at 4% compounded semiannually for 12 years. g.$2000 invested at 5% compounded quarterly for 6 years.
h. $2250 invested at 4% compounded quarterly for 9 years. i.$3500 invested at 6% compounded quarterly for 12 years.
j. All of the above compounded continuously.

You lend out $5500 at 10% compounded monthly. If the debt is repaid in 18 months, what is the total owed at the time of repayment? You lend$100 at 10% continuous interest. If you are repaid 2 months later,
what is owed?

What principal will amount to \$3000 if invested at 3% interest compounded
semiannually for 10 years?