Which of the following is not an example of matter? A. sand
B. heat from a fire,
C. helium in a balloon
D. fog paint on a canvas

B. heat from fire

Explanation:

It is not an example of matter because heat is energy and not matter

thermal energy is the answer

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 .