
The amount of the Moon visible d days after November 30 is modeled by the equation

The center of a clock is


Here is the initial position of a bike wheel before it starts to move.
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The vertical position, in inches, of P is given by
This lesson is from Illustrative Mathematics. Algebra 1, Unit 6, Lesson 19. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/3/6/19/index.html ; accessed 29/July/2021.
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