A film start at 17:15 and finish at 1 hour and 45 minutes later. what time did it finish?

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 ?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30