The ratio of nitrogen to potassium in a sample of soil is 9; 12. the sample has 48 units of nitrogen . how much potassium does the sample have.

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