Can somebody help me solve this ? F(x)=|x|+5

Find the equation using the point (4,8)

Solutions for 2x+7 less than or equal to 3x-5

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