25 g of polonium-210 is decaying exponentially. After 50 days 19.5 g of polonium-210 is left. Write a function in the form y = y0ekt giving the number of grams of polonium-210 after t days.

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A: topic- exponential function

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A: Please refer to the image below

Q: Is y=2^x an exponential function?

A: The objective of the question is conformation about function.

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.