Hey im having ALOT of trouble on this assignment for math theres one question i cant get, its 2+2=

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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. ?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !