X > -9 written in words

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

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. ?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b