Which expressions are equivalent to 3^−9/3^−6? Select EACH correct answer.

1/3^3
3³
3^−3
−27
27
1/27
−1/27

What is the vertex form of f(x) = x2 + 6x + 3

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. ?

Will give a: 122 b: 90 c: 48 d: 180