Need help answering asap

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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. ?