Premium Pizza, Inc. is a producer of frozen pizza products. The company makes a net income of SZL10 for each regular pizza and SZL15 for each deluxe pizza produced. The firm currently has 150 pounds of dough mix and 50 pounds of topping mix. Each regular pizza uses 1 pound of dough mix and 4 ounces (16 ounces = 1 pound) of topping mix. Each deluxe pizza uses 1 pound of dough mix and 8 ounces of topping mix. Based on the past demand per week, the maximum number of pizzas that Premium can sell is 70 regular pizzas and that of deluxe pizzas is 80 respectively. (i) Formulate this LP problem.