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4. (3 points) The cost for a kitchen supplier to manufacture x dishwashers is given by x2 C(x) =% 4xt4 11 dollars. Use Calculus to calculate the cost of manufacturing the 200" dishwasher in a given time period. 5. (3 points) Write the equation of the line tangent to the graph of f(x) = xz: at x =4 3x%2-3 6. (4 points) Find the area bounded by the graphs of y = x3x and the x-axis on the interval [2,10] **Round to the nearest thounsandth**