Blueberries are on sale for 2.80 per pint the regular price is 3.50 per pint what is the percent decrease

How to simply and write the answer n a whole number

What 620000 divided by 10 to the third power

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)