How do you write the number 506709 in expanded form

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

For how answer my question this will be the last question can you answer in math subject

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.