
Compound Interest & Half Life Word Problems
Authored by Savanna Hawkins
Mathematics, Chemistry
9th - 11th Grade
CCSS covered
Used 11+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Lauren has $90 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much will she have in 2 years?
$99.23
$21.98
$56.46
$9.21
Tags
CCSS.HSF-LE.A.1C
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Karla invested $1,000 in savings bonds. If the bonds earn 6.75% interest compounded semi-annually, how much total will Karla earn in 15 years?
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Emily would like to buy some new furniture for her home. She decides to buy the furniture on credit with 9.5% interest compounded quarterly. If she spent $7,400, how much total will she have paid after 8 years.
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jay'den earned $475 from mowing lawns last summer. He deposited this money in an account that pays an interest rate of 3.8% compounded annually. What will be his balance after 15 year?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Courtney saved up $2,200 working as a waitress over the summer. She put this money into a bank account that earned 5.2% interest and is compounded daily. How much will she have in her account at the end of 4 years?
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
Tags
CCSS.HSF.LE.A.4
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
Tags
CCSS.HSF.LE.A.4
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