IPlant A can produce

4

sedans and

6

minivans per week. Plant B can produce

8

sedans and

3

minivans per week. How many weeks should each plant operate to produce at least

40

sedans? Express your answer as a linear inequality with appropriate non-negative restrictions and draw its graph. Let x be the number of weeks that plant A is producing vehicles and let y be the number of weeks that plant B is producing vehicles.