Analyze the following quadratic functions. Choose the option(s) that open up, have a vertex that is a minimum and a negative y-intercept. Select all that apply.

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.