How do I do translations in geometry I need help on my test

Which number produces a rationale number when multiplied by 1/5

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. ?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0