Assume that the revenue R of a company satisfy the equality yR2 R 2x 89y = 73 where R is in millions of $, x is the hourly pay of employees (in $ per hour), and y is the number of employees (in hundreds). 1. Compute R x and R y as a function of x, y, R. 2. Compute R x and R y if the company pays employees $20 / hr and has 100 employ- ees. 3. Still assume that the company pays employees $20 / hr and has 100 employees. Estimate the change in revenue if the company rises the salaries to $22 / hr and hires 11 employees