Mr. Weber drives to a landscape supply center to buy sand and gravel. He needs at least 2 lb of sand. The amount of gravel he will buy will be at least twice the amount of sand he will buy. The center has 6 lb of sand and 13 lb of gravel in stock.
Here is the graph of the feasible region, where x represents the number of pounds of sand and y represents the number of pounds of gravel.

Which ordered pairs meet all the constraints and make sense in context of the situation?

Select each correct answer.

http://prntscr.com/di87wa

Question

Mr. Weber drives to a landscape supply center to buy sand and gravel. He needs at least 2 lb of sand. The amount of gravel he will buy will be at least twice the amount of sand he will buy. The center has 6 lb of sand and 13 lb of gravel in stock.
Here is the graph of the feasible region, where x represents the number of pounds of sand and y represents the number of pounds of gravel.

Which ordered pairs meet all the constraints and make sense in context of the situation?

Select each correct answer.

http://prntscr.com/di87wa

yuii · Answer

A and B?

mathstudent55 · Answer

Correct.
If you just look at the options, only A and B have y at least twice x.
Then you need to see if the ordered pairs of A and B are in the shaded region of the graph, and they are, so A and B are the only answers.