For the following questions, let f(x)=x^320x^23x+5. Use a graphing calculator or app to display the graph of y=f(x) using the viewing window 5x10 and 5y10. How many x-intercepts appear in this window? Hint An x-intercept is a point where the graph intersects the horizontal axis. Refer to Resource Graphing Technology, if needed. Answer:

For the following questions, let f(x)=x^320x^23x+5. Use your graphing device to find the maximum value of f(x) on the interval 5x10. Give your answer to the nearest tenth. Hint The maximum value is the y-coordinate of the highest point on the graph. y

Points on the graph where the function stops increasing and starts decreasing are called local maxima. Similarly, points where the function stops decreasing and starts increasing are called local minima. Local maxima and local minima are often called turning points of the function.

In Question 3, you used your graphing device to find a local maximum. This function has another turning point; change the viewing window until you find it. Give its coordinates as an ordered pair of numbers to the nearest tenth. Hint It's far down. Answer: