1. (7 PTS) Use the definition of the derivative to find f'(x) when f(x) = 312 - 5. Definition of the Derivative: 2. (3 PTS) Use the properties of limits to decide whether the limit exists. If the limit exists, find its value. x- - 25 lim 2-5x2+ 13x + 40 3. (5 PTS) Suppose that the profit (in hundreds of dollars) from selling a units of a product is given by P(x) = = 3x + 1' . Find the marginal profit when 20 units are sold. Round your final answer to 2 decimal places and label your answer.4. (5 PTS) Find the derivative of f(x) = elx+ + In (2x2 - 2x) + 2 5. (5 PTS) Find the derivative of f(x) = VAr - 1(3x3 - 1)5. You do NOT need to simplify your answer. 6. (5 PTS) Find # for the equation 3x* - 8y* = 10y. 7. (2 PTS) Use the graph to the right to answer the following fill in the blank questions. Where is the graph increasing?: Where is the graph concave down