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# Common and Natural Logarithms - Problem 2

###### Alissa Fong

###### Alissa Fong

**MA, Stanford University**

Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

Just like pi is approximately 3.14, lower case "e" in math is approximately 2.72. Both, however, are irrational (that is, non-terminating, non-repeating decimals.) "e" is so important and commonly used in finance and population growth that it gets its own log, called the natural log, which is notated ln.

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###### Alissa Fong

M.A. in Secondary Mathematics, Stanford University

B.S., Stanford University

Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.

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