The number of copies of a book sold the year it was released was 600,000. Each year after that, the number of copies sold decreased by half. Write an equation representing the number of copies, c, sold y years after the book was released.

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies