Which graph shows a proportional relationship in which the value of y is one-half of the value of x?

What is the binomial expansion of (2x-3)^5

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.