Wetzel                                                                                                                                                                                                      Summer 2006

Math 130

Test #3

                                                                                                                                                                            Name: ________________________

Read each question carefully and double-check you work.  Good Luck!!

1.)  You finance $20,000 for a car at 5% compounded annually for 5 years.

A.)  If you make all of your scheduled payments on time, what is the total amount you will pay for the car?

B.)  BONUS:  If the car depreciates at a rate of 35% a year, what is the car worth when it is paid for 5 years later?

Without using a calculator, simplify the functions for problems 2 and 3.

2.)  f(x) =                                           3.)  f(x) =

Find the first derivative for problems 4 - 6.  Be sure to simplify your answer.

4.)  f(x) =                                                            5.)  g(x) =

6.)  f(x) =                                                    7.)  f(x) = , find f’(1).

8.)  If a bank offers an interest rate of 8% compounded continuously, how long will it take a deposit to double?  ( round answer to two decimal places and include the unit)