We know that CB=2(x−1), so we can substitute in our x-value{its 9} to solve for CB. CB=?

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

the line of

a is the right answer