Cell phones require powerful batteries in order to work effectively. Which activity is best described as an engineering endeavor related to cell-phone batteries?
A. Improving their design to make it easier to recycle them when they are no
longer useful
B. Designing an investigation that will help determine where the materials used
to make them can be found
C. Developing a plan to convince cell-phone companies to use their batteries
Ο Ο
D. Performing experiments to explain how different materials used in batteries
store energy

connect the batteries in series and hope

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 .