Help me with this please!

What two criteria are needed for triangles to be similar

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

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. ?