A horizontal asymptote will occur at y= k. 

Khan Academy Practice:

• • Graphs of Exponential Functions

Recall the algebraic rules of exponents.

Khan Academy Practice:

• • Exponent Properties

  • Solving Exponential Equations

To determine the interest, we can use this formula, where A represents the total balance, the principal, P, is the initial investment, r is the interest rate (expressed as a decimal), n is the number of compoundings per year, and t is the time in a year.

Khan Academy Practice:

• • Compound Interest Word Problems

The number e = 2.718281828... is an irrational, transcendental number known as the natural base.

Khan Academy Practice:

• • e and Compound Interest