A project has been deferred to start at the end of 4 years from now when the start up costs will increase to $80,000. The manager has decided to save money for the project by depositing $15,000 at the end of each year into a bank account that pays interest at 15% compounding semi-annually. If there is no withdrawal, find

a. The amount of money the manager will get from this bank account at the end of 4 years =

b. the effective annual rate.

please show all the steps and explain in a clear way.