Erica is making necklaces and bracelets to se at the craft show. it takes her 3 hours to make a necklace and 2 hours to make a bracelet. she sells the necklaces for $18 and the bracelets for $15. she has 60 hours available this coming week to make the jewelry, and would like to make at least 25 total pieces of jewelry, with at least 2 being necklaces. how many of each should she make to maximize her profit?