7. Find the root to the function f(x) = arctan x - x -1 using Newton's Method correct to 6 decimal places. Use x, = 2. Show all work and show the result at each step.8. A rectangular storage container with no top is to have a volume of 10 m3. The length of the base is twice the width. Material or the base costs $10 per square meter while materials for the sides costs $6 per square meter. Find the absolute minimal cost to build such a container. Be sure to nd the domain and prove your