Calculate the nominal and effective rate of interest for the following ordinary annuity. Determine the nominal interest rate whose compounding interval equals the payment interval. 
Definitions:
Clean Hair
Hair that is free from dirt, grease, and pollutants, often achieved through washing and grooming.
Antidepressant
Antidepressants are a class of drugs that are used to treat depressive disorders by altering chemicals in the brain that may become unbalanced.
Cold Sweats
A state of sweating without the presence of heat, often accompanying anxiety, fear, or medical conditions.
Selective Serotonin Reuptake Inhibitor
A class of drugs that are typically used as antidepressants in the treatment of depression, anxiety disorders, and some personality disorders.
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