The number of adults at a water park (measured in hundreds of people) is represented by the function a(w)=−0.4d2+4w+8, where w is the number of weeks since the water park opened for the season. The number of children at the same water park (measured in hundreds of people) is represented by the function c(w)=−0.2w2+7w+14, where w is the number of weeks since the water park opened for the season. What function, f(w) , can be used to determine how many more children than adults are at the water park any week during the season? f(w)=0.2w2+3w+6 f(w)=0.2w2+11w+6 f(w)=−0.2w2+3w−6 f(w)=−0.2w2+3w+6