The growth factor is the base of the exponential term: 1.0279. The growth rate is 1 less than this: 1.0279 -1 = 0.0279 = 2.79%. It is positive, so represents a growth of 2.79% per day.
Add all of the x on each fraction up( like there four x's on 1/3 add them up) then divide by the number of options there are (5) then you get the answer