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Exponential functions are functions with x as the input variable, and x is in the position of an exponent to a base. That is, these functions, in simple form, look like this:

f(x) = 3^{x}

The following links explain several aspects of exponential functions.

Transformations of f(x) = 2^{x}

Money Matters

Simple Interest

Compound Interest

Continuous Interest

Effective Annual Rate

Ordinary Annuity

Loans