A rectangle has a vertex on the graph of y = 9 - x^2, one in the origin, one in the positive side of the x - axis, and the fourth one on the positive side of the y - axis.

* express the area of the rectangle as a function of x

* what is the domain? ( i can prob get this when i know how to do the area one)

* wat is the area of the rectangle when x = 1.5?

thanks for your help