website sells popular books in hardcover, paperback, and digital form. The paperback version of a book sells for 12 dollars less than the hardcover version, and the digital version sells for half the price of the paperback copy.

The website adds a finance charge equal to 1/10 of the price of the hardcover version to all purchases.

Which expressions represent the total cost of the digital version of a book if the hardcover price is h dollars?