Acompany 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) x2-2xy+9y+3x -87y-6 determine how many of each type of solar panel should be produced per year to maximize proft. the company will achieve a maximum profit by selling solar panels of type a and sellingsolar panels of type b