(MIDDLE SCHOOL MATH) Can someone please explain to me how to solve letter a)?

Solve this problem! extra ! 3025/5.5 = a/90.75

One side of a rectangle is 7 centimeters shorter than six times the other side. find the length of the longer side if we also know that the perimeter of the rectangle is 266 centimeters.

Your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph.