Could you break down one fifth times 3?

1/5 *3 = 15

You have to do Keep, Change, Flip. When you do that it becomes 1/5*3/1.

That equals 15.

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