Which equation matches the graph of the greatest integer function given below?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?

Point a (7,3) is translated to a'(16,-9). which rule describes the translation?