Solve the following problems.
1. If the length and width of a rectangular lot in functions are L(x) = x + 5 and W(x) = x + 1 respectively, What will be the area of rectangular lot in function?
2. If the area of a rectangle in terms of x represent by a function f(x) = 3x³ + 8x² + 4x-8 and the width is g(x) = x + 2, What is the length of a rectangle in function?