Felix invests some money in a savings bank that offers an annual rate of interest of 8%. He has decided that he will not withdraw his money until it has doubled. How long will Felix have to wait?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters