A concrete block is being lowered from a height of 350 feet above the ground at a constant rate of 4.2 feet per second. Which function can be used to determine the height, h, of the concrete block above ground after s seconds?

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