Gary is searching for a buried treasure. The treasure map is on a rectangular coordinate grid with only the following clue: The treasure is at a spot where one coordinate is the opposite of the other and the y-coordinate is 4 greater than the xcoordinate. At which coordinates would the treasure be located on the map?​

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply