Patrick draws 2 sketches. he spends 3/7 hours drawing the first sketch. he spends 28/14 hours drawing both sketches. how much time does patrick spend drawing the second sketch?

if x decreases by 4 then y increases by 10

step-by-step explanation:

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