The theory of plate tectonics suggests that about 200 million years ago, all of earth's land was confined to a single continent called

a. laurasia.
b. eurasia.
c. gondwanaland.
d. pangaea

The answer is D Pangaea

The people at that time called their continent "Pangaea". We see it everywhere in their books, newspapers, mp3s and movies.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .