!000000000 to the 5th power?

Can someone me with my hwplz(only the circled ones)

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. ?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels