A company produces two types of solar panels per year: x thousand of type A and y thousand of type B. The revenue and cost equations, in millions of dollars, for the year are given as follows. R(x,y) = 5x + 7y C(x,y) = x- - 4xy + 7y-+23x-77y-4 Determine how many of each type of solar panel should be produced per year to maximize profit. The company will achieve a maximum profit by selling solar panels of type A and selling solar panels of type B The maximum profit is $ million