A weed has infested a community garden and is killing the flowering plants in the garden as it grows. The number of surviving flowering plants over time can be represented by the function f (t) = (2t + 14)/2 where t is time in weeks. The number of weeds in the garden over time can be represented by the function w(t) = e^(t-1) +3, where t is time in weeks. How many weeks, rounded to the nearest tenth, will it take for the number of flowering plants to be equal to the number of weeds in the garden?