A store manager is marking down easels from $40 to $28. What is the discount, as a percentage?
Write your answer using a percent sign (%).

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

17 in long 1.3 ft wide and 8in high what is the volume

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?