3) Determine the equation of a quadratic function that has roots of -4 and 3 and goes through the point (-2, 30). 4) Solve the following by graphing. An Olympic diver summersaults from a springboard. Her height, h metres above the water / seconds after she leaves the board is given by the formula h(1) = - 4.91 + 8.81 + 3. a) Determine how long it takes for the diver to reach the water. Round to 2 decimal places. b) Determine the starting height of the diver. c) Determine how long it takes the driver to reach a height of 2 metres. Round to 2 decimal places. d) This problem (part A, in particular) can be solved in more than one way. Briefly explain the 2 ways it can be solved by graphing as well as 1 other way you could solve it. ii) iii)