Superman runs until reaching his flight takeoff speed of 15 - A graph of his velocity over time is shown below, where rightward is the positive velocity direction.

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.