\sum_(n=1)^(\infty ) n(n+1)(x^(3)-1)^(n)

Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.

Are you trying to figure out the volume?

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.