Just need the first question

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 coefficient of the term of degree of degree 5 in the polynomial below

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !