HELP Find the slope of each linear graph to solve the riddle.

( i just need help with V)

How many $20 bills do you need to have to make $280

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. ?

Equation for the calculation double 2 and then add 5