3420 Compound Interest pt2.notebook

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3/4/20   Algebra 2Warmup:  An isotope of cesium has a half life of 15 years.  If 20 grams of cesium disintegrates over 60 years, how many grams are left?  

Objectives Compound Interest

3420 Compound Interest pt2.notebook

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Desmos Exponential Sort 

https://teacher.desmos.com/activitybuilder/custom/579bd9fe3037419e171c207d

3420 Compound Interest pt2.notebook

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a. b.

c. d.

3420 Compound Interest pt2.notebook

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a. b.

c. d.

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a. b.

c. d.

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a. b.

c. d.

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a. b.

c. d.

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a. b.

c. d.

3420 Compound Interest pt2.notebook

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Google Form on mrjalgebra.com

3420 Compound Interest pt2.notebook

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Compound Interest Easy.docx

3420 Compound Interest pt2.notebook

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Attachments

compoundinterestpracticeworksheet4.pdf

Compound Interest Easy.docx

Compound Interest Practice Worksheet

Name______________________________________________________________Date____________________

1. A newborn child receives a $20,000 gift toward a college education from her grandparents.

How much will the $20,000 be worth in 17 years if it is invested at 7% and compounded

quarterly?

2. If you invest $10,000 in a bank which one is a better investment?

a) 9% compounded monthly

b) 9.3% compounded annually

3. If an investment company pays 6% compounded semiannually, how much should you deposit

now to have $10,000 5 years from now?

4. At age 27, Jill deposited $4,000 into an IRA, where it earns 9.8 % interest compounded monthly.

What will it be worth when she is thirty-five?

5. If you have $3,500 after 10 years on an investment that pays 5.3% compounded daily, what

was the principle amount you started with?

6. A $175,000 loan compounded monthly at 3.2% for 19 years. How much interest was earned?

7. Your savings account has a balance of $2513.45. You opened the account 3 years ago.

Interest on the account is compounded weekly at an annual interest rate of 4.35%. How

much did you invest originally?

8. You deposit $1000 in an account that pays 6% annual interest. Find how long it will take for the

amount to double if the interest is compounded quarterly.

SMART Notebook

Name: _____________________________

Algebra 2: Compound Interest Practice

1. If you deposit $7,500 into an account paying 6% annual interest compounded quarterly, how much money will be in the account after 10 years?

2. If you deposit $4,000 into an account paying 8% annual interest compounded monthly, how much money will be in the account after 7 years?

3. If you deposit $12,000 into an account paying 5% annual interest compounded semi-annually, how much money will be in the account after 9 years?

4. You have $20,000 you want to invest. Both Bank A and Bank B will give you an annual interest rate of 9%. Although, Bank A will compound your interest monthly, while Bank B will compound your interest quarterly. After 5 years, how much more money will you have by investing with Bank A as opposed to Bank B.

SMART Notebook

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