Can someone help me? This is about experimental probability.. thank you!

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 ?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.