David earns a 3% commission on television he sold. On Friday, he sold television priced at $550.What is the commission that David earns for his sale on Friday?

Eiko is wearing a magic ring that increases the power of her healing spell by 30%30\%30%30, percent. without the ring, her healing spell restores health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?