how do you correctly factor polynomials? i haven't been able to get it no matter how my teacher explained it.

Find the cosine function that is represented in the graph.

What expression is equivalent to 42x-56y

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. ?