Aren has an empty coin jar. She adds two dimes, three quarters, and six nickels into a money jar. The next day, she removes two quarters and four nickels.

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Which representation has a constant of variation of -2.5

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).