Which set of vertices forms a parallelogram? A.
A(2, 4), B(3, 3), C(6, 4), D(5, 6)

B.
A(-1, 1), B(2, 2), C(5, 1), D(4, 1)

C.
A(-5, -2), B(-3, 3), C(3, 5), D(1, 0)

D.
A(-1, 2), B(1, 3), C(5, 3), D(1, 1)

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters