The length of a rectangle is represented by 2x+3, and its width is represented by 3x+7. the perimeter of the rectangle is 35 units. find the x value

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?

What is the slope of the line shown below?