Use the drag-and-drop tiles to determine whether the number is rational or not rational

What is the base of the exponential expression of 4 to the power of 5

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.

Can someone tell me if these are correct?