Revenue functions the total weekly revenue in dollars of

Question

Question: REVENUE FUNCTIONS The total weekly revenue (in dollars) of Country Workshop associated with manufacturing and selling their rolltop desks is given by the function

R(x, y) = -0.2x² - 0.25y² - 0.2xy + 200x + 160y

Where x denotes the number of finished units and y denotes the number of unfinished units manufactured and sold each week. Compute ∂R/∂x and ∂R/∂y when x = 300 and y = 250. Interpret your results.