A=2. B=3. C=4

1) 2bc - 4=
2) 8a (divide) c=
3) 6b (divide) a=
4) 4a + 7 =
5) ac - 7=
6) 2b - a =

Step-by-step explanation:

1.)  2(3)(4) - 4 = 24 - 4 = 20

2.)  8(2) / (4) = 16/4 = 4

3.)  6(3) / (2) = 18 / 2 = 9

4.)  4(2) + 7 = 8 + 7 = 15

5.)  (2)(4) - 7 = 8 - 7 = 1

6.)  2(3) - (2) = 6 - 2 = 4

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints