How many degrees are in a third of a full turn?

Which graph has a rate of change of zero

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?

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