1. Worksheet/Pg. 269/277 Homework
Pg. 282 #7, 15, 17 Pg. 292 #1 – 20 all
# ,920; 2.31x1019 #51 P(t) = 20(2)t
# months #53 food, health, etc
# days # days
# $ #28 $673.43
# $ #30 $674.91
# $ #41 $4,161.39
# $191,278,744,600.00

2. 5.3 Effective Rates and Annuities
An $86,000 mortgage for 30 years at 12% APR requires monthly payments of $ Suppose you decide to make monthly payments of $ When would the mortgage loan be completely paid?
Suppose you make payments of $ for that same $86,000 mortgage for 10 years and then make payments of $ until the loan is paid. In how many years total will the mortgage be completely paid?

3. 5.3 Effective Rates and Annuities
Consider a mortgage loan of $80,000 for a 30 year term with interest at 10% APR and monthly payments.
Determine the monthly payments
Suppose one half of the monthly payment was made every 2 weeks. When would the mortgage loan be completely paid.

4. 5.3 Effective Rates and Annuities
Sally contributes $80 monthly into an IRA account that earns 6.25% interest. If Sally starts putting money away when she graduates from college (22), how much money will she have when she retires (67)?
You have saved $2,500 to put down on a car and you can afford to pay $220 for monthly payments. If you are approved for a 5 year loan at 7.5%, how much car can you afford?

5. 5.3 Effective Rates and Annuities
The half-life of a certain radioactive substance is 21 days and there are 4.62 grams present initially.
Find an algebraic expression for the amount A of substance remaining as a function of time.
Find a complete graph of the function.
When will there be less than 1 gram of the substance remaining?

6. 5.4 Logarithmic Functions and Their Properties

7. 5.4 Logarithmic Functions and Their Properties
Solve for x:
The Nature of Logarithms
Why do we deal with positive x values when dealing with logs?
What information do we always know about a log?

8. 5.4 Logarithmic Functions and Their Properties
Rewrite the following Logarithms
Word Problem!! 
Use an algebraic method to find how long it would take a town with a population of 50,250, increasing continuously at the rate of 3.25% yearly, to reach a population of 301,500.