Ihave no idea on how to solve this a=p+prt solve for r

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

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?