A diet is to contain at least 1480 units of carbohydrates, 2140 units of proteins, and 1960 calories. Two foods are available: F, which costs $ 0.09 per unit and F, which costs $ 0.05 per unit. A unit of food F contains 2 units of carbohydrates, 4 units of proteins and o calories. A unit of food F, contains 8 units of carbohydrates, 6 units of proteins and 4 calories. Find the minimum cost for a diet that consists of a mixture of these two foods and also meets the minimal nutrition requirements. Corner points of the feasible region: If there is more than one corner point, rype the points separated by a comma (i.e. (1.2), (3,4)). Minimum cost is: $ when F = 0 and F = units units.