Answer of the following Questions

7.         Find the vertex form of the quadratic equation by completing the square

9.         Write a brief verbal description of the relationship between the graph of the             indicated function and the graph of y = x².

14.       Match each equation with a graph of one of the functions f, g, m, or n in the             figure.

23.       The graph opens downward, so a = -1.

27.       Find the vertex form for each quadratic function. Then find each of the following:

            (A) Intercepts

            (B) Vertex

            (C) Maximum or minimum

            (D) Range

43.       Solve graphically to two decimal places using a graphing calculator

49.       (A) Graph f and g in the same coordinate system.

            (B) Solve f(x) = g(x) algebraically to two decimal places.

            (C) Solve f(x) > g(x) using parts (A) and (B)

            (D) Solve f(x) < g(x) using parts (A) and (B)

            (B) Setting f(x) = g(x) gives:

63.       Tire mileage. Using quadratic regression on a graphing calculator, show that the             quadratic function the best fits the data on tire mileage in Problem 61 is

65.       Revenue. The marketing research department for a company that manufactures             and sells memory chips for microcomputers established the following price-            demand and revenue functions:

            (A) Sketch a graph of the revenue function in a rectangular coordinate system.

            (B) Find the value of x that will produce the maximum revenue. What is the             maximum revenue?

            (C) What is the wholesale price per chip that produces the maximum revenue?

67.       Break-even analysis. Use the revenue function from problem 66, and the given             cost function: