The image below is the question

-- If A burns out, then all six bulbs go out, and an inky blackness descends over the whole circuit. (Choice-A).  The battery is happy though, because it doesn't have to supply ANY energy.

-- If D or E burns out, then all five of the not-burned-out bulbs still shine.

-- If F or C burns out, then A, B, D, and E still shine.

-- If B burns out, then A and D still shine.

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 .