The length of a rectangle is 3 inches more than the width. Let W be the width (in inches), L be the length (in inches), and A be the area (in square inches).
a. Sketch three possible rectangles of length 3 inches more than the width.
b. Which of the symbols W, L, and A are variables? Explain.
c. Which of the symbols W, L, and A are constants? Explain.