Find the average rate of change of the function over the given interval

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?

In what organelle does photosynthesis take place?

Hundred and tens tables to make 430 in five different ways