10. A student makes and sells necklaces at the beach during the summer months. The material for each necklace costs her $6, and she has been selling about 20 per day at 810 each. She has been wondering whether or not to raise the price, so she takes a survey, and finds that for every dollar increase in price, she would lose two sales per day a. What price should she set for the necklaces to maximize her profits? b. Check your answer to part (a). I1. For each of the following functions, () Determine the right- and left-hand few more points, and (iv) Sketch behavior, (ii) Find the real zeros, (iii) Plot the graph. b. g(z) =-4(z-3)2(2x + 1) (x + 3)