Below are the first several terms in a sequence. 0.4, 2, 10, 50, 1
Part A
Write a formula for the nth term of the sequence. Be sure to specify a starting value of n.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?