What is the standard labeling for a 30-60-90 triangle?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}