Pls help this is really important

A(t)=728(1+0.04)^t how much money did aditya originally invest

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

What is the factored form of the following expressions? d^2 – 13d + 36