Please help I am confued

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

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. ?