M studios received an invoice for photography equipment for $500 dated May 5, with terms 2/10, n/30. What payment will settle the invoice on:
a) May 15?
b) May 16?

Photography Equipment

Tools, machines, and accessories used for taking photographs, such as cameras, lenses, lighting, and tripods.

Invoice

A document issued by a seller to a buyer that lists goods or services provided, the costs, and the payment terms.