Human Interactions Corporation produces two products using two assembly lines. Line A has 140 hours available this month while Line B has 80 hours available. On Line A, Product 1 requires 10 hours of production time and Product 2 requires 8 hours of production time. Only Product 2 needs to be finished on Line B, and takes 8 hours of time. When completed, the profit per unit for Product 1 is $60 and for Product 2 is $40. Formulate a linear programming model to solve this problem. List the extreme points and determine the solution graphically.