Your answer would be y=9
Which situation CANNOT be represented by this equation? 6x−7=29.
1 answer:
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Answer:
1600 boxes of cookies; 350 boxes of chocolates
Step-by-step explanation:
Let x and y represent the numbers of boxes of cookies and chocolates to order, respectively. The constraints seem to be ...
- x ≥ 2y
- x ≤ 550 +3y
- x + y ≤ 1950
The objective function we want to maximize is ...
p = 2.70x +2.45y
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Looking at the problem, we see that cookies yield the most profit, so we'd like to maximize the boxes of cookies sold within the allowed limits.
There are two limits on x:
x ≤ 550 +3y
x ≤ 1950 -y
x will be as large as it can be if it bumps up against these limits simultaneously:
550 +3y = 1950 -y
4y = 1400 . . . . . . . . . add y-550
y = 350
x = 1950 -350 = 1600
Profit will be maximized for an order of 1600 boxes of cookies and 350 boxes of chocolates.
_____
The "feasible region" of the solution is where the three constraint inequalities overlap. It is a quadrilateral with vertices at (0, 0), (550, 0), (1300, 650), and (1600, 350). We can reject the ones with x or y being 0. Per our analysis above, the solution of interest is (x, y) = (1600, 350), since it maximizes x.
The usual protocol for solving a linear programming model like this is to evaluate the objective function at each of the vertices. With a little thought about the problem, we have saved some evaluation effort.
