Question

anyone familiar with optimization?

Answer 1

yes

Answer 2

Find y as a function of x and maximize the area x*y.

Answer 3

When x = 0, y = 4
When x = 12, y = 0
When x = x, y = f(x). Find f(x).

Answer 4

In other words, find the equation of the straight line CB assuming A is the origin.