Write 54 in scientific notation

Graph the equation by plotting point x=2

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

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle