Notebooks cost $1.20 each. this
weekend they will be on sale for $0.80.
what percentage is the sale?

Which linear inequality is represented by the graph? !

What is the binomial expansion of (2x-3)^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