If you multiply 12 subtract 2.40 how do you get 9.60 because i got 2.80

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Answer pls man im trying to get out of summer school

During a wright loss challenge your friend goes from 125 pounds to 100 pounds. what was the percent weight loss