The viewing window of a certain calculator is the shape of a rectangle

A) let w represent the width of the viewing window in centimeters. If the window is 5 centimeters longer than it is wide, write an expression in terms of w for the length of the viewing window

B) Write a symbolic rule that represents the perimeter,P, of the viewing window in terms of w

C) If the perimeter of the viewing window is 26 centimeters, determine the dimensions of the window