Which is better: having a stock that goes up 30% on monday than drops 30% on tuesday, or a stock that drops 30% on monday and goes up 30% on tuesday? in each case, what is the net percent gain or loss?

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path