William paid $4800 interest on a 4-year car loan at 8%. What was the original principal loan amount?

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Graph the equationy= x+3[tex]y = x + 3[/tex]

What are the triple angle formulas? is it related to double angle identities?