As a waitress, Valerie averaged $51.50 per day in tips over the course of five days. Over the first four days, Valerie made $37.75, $29.15, $94.25, and
$44.85 in tips. How much money did she make in tips on the fifth day?

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.