How do i solve this step be step

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft