
Concept explainers
Here are additional formulas that you will use to solve some of the remaining exercises. Be sure you understand what each formula describes and the meaning of the variables in the formulas.
In Exercises 21-22, round all answers to the nearest dollar.
Here are two ways of investing $30,000 for 20 years.
|
Lump-SumDeposit | Rate | Time |
$30,000 | 5% compounded annually | 20 years | |
|
Periodic Deposit | Rate | Time |
$1500 at the end of each year | 5% compounded annually | 20 years |
a. After 20 years, how much more will you have from the lump-sum investment than from the annuity?
b. After 20 years, how much more interest will have been earned from the lump-sum investment than from the annuity?

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Chapter 8 Solutions
Thinking Mathematically Plus MyLab Math -- Access Card Package (7th Edition) (What's New in Service Math)
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