Answer:
310
Explanation:
Assuming that the equation (f = 5x + 8y) is the objective function, we just have to plug in the vertices, or the edges of the shape created by the lines, into that function.
The graph already grants those vertices, which are:
(0, 23)
(12, 20)
(62, 0)
The first number plugs into the x, and the second for the y.
5(0) + 8(23) = 184
5(12) + 8(20) = 220
5(62) + 8(0) = 310
The maximum value is 310