After the expression is simplified as much as possible, x is raised to what exponent?

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. ?

Why is x= 4 a solution to the proportion 14/x 56/1 6

Determine if this is a solution to the system