Mostly fun stuff
Ordered from best to worse:
Growth rate is not affected by constant factors and lowerorder terms. Example: 10^5n² + 10^8n
–> Quadratic.
BigO notation gives an upper bound on the growth rate of a function:
f(n) is O(g(n)) 
g(n) is O(f(n)) 


g(n) grows more  YES  NO 
f(n) grows more  NO  YES 