The number of cars produced when x dollars is spent on labor and y dollars is spent on capital invested by a manufacturer can be modeled by the following equation. (Both x and y are measured in thousands of dollars.) 20x1/3 2/3 = 240 (a) Find dy dx dy dx Evaluate at the point (27, 8). (Round your answer to four decimal places.) dx (b) Interpret the result of part (a). When -Select-- is spent on labor and -Select--- is spent on capital, the amount spent on capital with respect to the amount spent on labor is -Select