P(x)=-0.004x^3+.025x^2+0.55x+8
1 . Use the model to predict the hourly number of items produced in a 4 hour shift
2. According to the model, how many hours makes the most productive shift m? That is, at how many hours is the hotly production at a maximum?
3. At the shift length found in part B, how many items are produced per hour?