If your business uses spreadsheets, you may find it necessary to count the number of cells containing data in a worksheet. You might also need to determine how many cells are empty or if the values of ...

A quadratic equation is drawn as a curve on a set of axes. This type of curve is called a parabola and it is symmetrical. To draw the graph we need coordinates. We generate these coordinates by ...

A suffix is a letter or group of letters that goes on the end of a word and changes the word's meaning. Sometimes they also change the original word's spelling. When adding a suffix you might have to ...