A pair of new headphones cost $20 to make. They get marked up in price 250% by a retail store before they  are sold. How much will the headphones cost?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

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