These are the fees for sending a package by Media Mail: $2.41 for the first pound $0.41 per additional pound for the next six pounds $0.39 per additional pound after that For example, a two-pound package costs $2.82 to send by Media Mail. If a package full of books costs $7.99 to send by Media Mail, how many pounds does the package weigh? Explain your work in complete sentences. PLZ HELP