Me.. it’s late at night and i’m stuck it’s talking about finding reciprocals

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?