6. A rectangle has an area of 14y^3 - 63y. a. What are expressions for the length and width where one dimension is the GCF?

b. Does a rectangle exist with the given dimensions if y = 2? Explain.

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

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Math it's appreciated. (picture provided)