The attached Excel files ask you to write simple formulas in cells:

In StockWatcher create formulas in cells F4 to F9 that calculate percentage gains based on purchase price in C column cells and current sales prices from the D column. Remember that (last price - current price divided by last price) is the algebraic formula. Which stock had the highest gain?

In MusicPlayerz, write formulas in Gross Sales and Profit cells. Gross Sales is (Price multiplied by Projected Sales). Profit is (Actual Sales multiplied by the difference between Price and Cost). The % of Sales should calculate and tell you which is your top profit maker. Which is?

In TotalMischief, I want a graph that shows Regional Sales by Quarter. Hint: highlight the cells A3:E7 and then select Insert followed by the appropriate one from Recommended Charts.