Highway engineers want to improve a dangerous stretch of highway. they expect that it will reduce the risk of someone dying in an accident from 5.3 percent to 2.1 percent over the life of the highway. if a human life is worth $10 million, then the project is worth doing as long as it does not cost more than a. $2.1 million. b. $210,000. c. $53,000.

unlike poles attract

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 .