1. If f (x) = -3x2 + 48x + 10 find the vertex. (algebraically) a = - 3 X=_ 1 b - 48 2 1- 3 ) X = 8 2. Solve the equation 3x2 - 48x = -40 algebraically. Round to two decimal places. e - 3 b = -48 C = 40 3. Given the following Profit function P(x) = -23x2 + 1840x - 26,800 with x: flat screen tv's and P(x) is profit in dollars. a. Find the profit when you sell 10 TV's. Show work. - 23 (10) + 1840 ( 10) # b. Find the maximum profit algebraically. Show steps and use a sentence saying what the profit is and how many TV's were sold. c. Find the number of TV's you would have to sell to get a profit of $800 algebraically. Show work and there may be more than one