| A | B |
| Asymptote | a line that a graph approaches as you move away from the origin. |
| Common Logarithm | the logarithm with base 10. It is denoted simply by log. |
| Decay Factor | the quantity 1 - r in the exponential decay model y = a(1-r)^t where a is the initial amount and r is the percent decrease. |
| Exponential Decay Function | a function of the form f(x)= ab^x where a>0 and 0<b<1. |
| Exponential Function | a function that involves the expression b^x where b is a positive number other than 1. |
| Exponential Growth Function | a function of the form f(x)= ab^x where a>0 and b>1. |
| Growth Factor | the quantity 1 + r in the exponential growth model y=a(1+r)^t where a is the initial amount and r is the percent of increase. |
| Logarithm of y with Base b | denoted as logb y and is defined as logb y = x if and only if b^x = y. |
| Natural base e | an irrational number defined as follows: As n approaches pos. inf. the value of (1+1/n)^n approaches 2.71828... |
| Natural Logarithm | the logarithm with base e. It is denoted by ln. |