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Q1) When you breathe, the velocity of the air entering and exiting your lungs changes in terms of time. The air entering your lungs has a positive velocity, and the air exiting your lungs has a negative velocity. If a person is at rest, this relationship can be modelled using the graph shown. Air Velocity at Rest Velocity (L/'s) Time (s) a) What is the equation of the axis, and what does it represent in this situation? b) What is the amplitude of this function? ( ) What is the period of the function, and what does it represent in this situation? Q2) Find the missing length of the following figure to the nearest tenth of a centimetre. 7.5 cm 85" N 11.2 cm M Q3) Suppose the height of a Ferris wheel is modelled by the function b(0) = 8 sin (0 - 45) + 10, where b(0) is the height in metres and 0 is the number of degrees one has rotated from the boarding position. a) What does the 10 mean in terms of a Ferris wheel? b) What does the 10 mean in terms of transformations