Question

How do you do functions with exponents

Answer 1

How do you create them?
https://www.khanacademy.org/math/trigonometry/exponential_and_logarithmic_func/exp_growth_decay/v/word-problem-solving--exponential-growth-and-decay

The Internet's a really good resource.

Answer 2

Both of these should help you:
http://www.mathsisfun.com/sets/function-exponential.html
http://www.purplemath.com/modules/expofcns.htm

Answer 3

Thanks for the medal! :D @KinzaN