Parallelogram and has vertices a(-2, -5½), b(-4, -5½), c(-3, -2), d(-1, -2). find the vertices of parallelogram a cd's after a translation of 2½ units down.

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