Please solve

The manufacturing process of a company is described by the Cobb-Douglas production function f(x, y) = 3x646. a. Approximate, to two decimal places, the number of units produced when 80 units of labor and 15 units of capital are used. f(80, 15) = b. Find the change in the level of production if the number of units of labor is decreased by 1 from 80 to 79, and the number of units of capital is increased by 5 from 15 to 20