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...

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^2-4xy+8y^2+15x-45y-9

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.

What is the maximum profit?