Death valley, california, has the lowest elevation in the united states. its elevation is 282 feet below sea level. mount mckinley, alaska, has the highest elevation in the united states. its elevation is 20,320 feet above sea level. use integers to describe these two locations in the united states.

What is the value of x? enter your answer in the box. (cm)

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?