A profit-maximizing firm will minimize costs by employing ca…

A profit-maximizing firm will minimize costs by employing capital and labor in a combination that, given the level of output they wish to achieve,  satisfies which of the following conditions?  In the equations below let MPL represent the marginal product of labor,  let MPK represent the marginal product of capital, let w represent the wage rate of labor, and let r represent the rental rate of capital.