This TI-Nspire Activity examines the reflective property and the distance property of a ellipse. https://education.ti.com/en/activity/detail/properties-of-ellipses
If you were given the opportunity to be given a permanent monthly salary of 1,000,000 for 30 days of work or a salary beginning with a penny on day one and doubling each day for 30 days which would you choose?
https://education.ti.com/en/activity/detail/shall-i-double-up-or-take-the-million-exponential-growth
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