8. Prove that the function f(x) = x - x - 2x - 5 has a real zero on the interval [1,2]. For extra credit, determine the zero to the nearest hundredth. You must show all algebraic work to receive credit! 9. A rectangular playground is to be separated into two identical rectangular fields. If the school has budgeted 800 meters of fence for the entire project, find the dimensions and maximum area of each field. 10. This problem will be assigned points based on your attendance in the required Monday WebEx sessions. Is there anything you would like to see done differently? (Other than making them optional)