London Eye has a radius of 60 meters, it has a 15 meters clearance above the ground to allow the London Eye wheel to spin safely. It exactly takes 30 mins to complete one cycle. The entrance is at the bottom of the wheel. Height (h) measure in meters and time (t) measure by minutes.

a)Formulate an equation for this application.

b)After 8 minutes how far is Rebecca who got into the London Eye wheel?

What is the instantaneous rate of change at 8 minutes (express in meters/ second)? Explain why it makes sense?