Question 1: Profitable fruitcake. Sharon’s Revenue R (in dollars) on the sale of x fruitcake is determined by the formula R=50x-x^2. Her cost C (in dollars) for producing x fruitcakes is given by the formula C = 2x+40. For what values of x is Sharon’s profit positive? (Profit = revenue-cost.)
Question 2: Write a quadratic equation that has each given pair of solutions -2i√3, 2i√3
Question 3: Solve each inequality. State the solution set using interval notation and graph x^2-5x+6
Question 4: a^2+2a