Applying Logarithmic Functions

A series of college algebra lectures: The Richter Scale, The Distance Modulus Formula.

The Richter Scale
The basics of the logarithmic Richter and Moment Magnitude Scales to measure earthquakes

The Distance Modulus Formula

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

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