A1 quart container of oil cost $2.89 a case of 12 1 quart containers cost $28.56 how much is saved per container by buying the oil by the case

Ineed i been stuck on this question since yesterday

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

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}