1) The same question was posted here: https://web2.0calc.com/questions/help_55674
2)
Let x and y represent the numbers of Platter A and Platter B the organizer needs to purchase..
x + 2y ≥ 80. 80+ hamburgers are required
3x + y ≥ 95 . 95+hot dogs are required
5x +8y ≥ 380.38+ chicken wings are required
16x +20y = c
The vertex is (x, y) = (20, 35). The other vertex close to the origin is (60, 10). The cost of that order would be $1310.
The value of an order of 20 Platter A and 35 Platter B is $1020