The number in parenthesis after f is the x coordinate. Basically, it says which y coordinate is tied with an x value. In choice a, it says that when x is 0 y is 3, etc.
So, you can look at the graph to see which answer choice has a point from the graph. Choice a says (0,3), and that does not match. Choice b says (5,-1) and that does match. So the answer is B.
*(x,y)*
Y = (2)^(n+1) - 2
is the general term for this.
Each diagonal divides the rectangle <span>divides it</span> into two congruentright triangles so the area of the triangle will equal one half of a rectangle that is 5 units long and 2 units wide
