Afisherman uses sonar to find a shoal of fish. a pulse of ultrasound is sent out and the reflection is detected 0.4 seconds later.

how long did it take the sound to travel from the boat to the fish?

The sound left the boat, went to the fish, bounced off of the fish, went back to the boat, and was detected after 0.4 seconds.

The sound took 0.2 seconds to go from the boat to the fish, and another 0.2 seconds to go from the fish back to the boat.

the plateau is likely to turn into a desert do to corrosion.

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 .