The population of snails in a tank

Question

the population of snails in a tank at the aquarium is found to triple every year. Marks visits the aquarium and counts 80 snails in the tank write a function f(n) to model the number of snails in the tank n years after marks visit.

Answer 1

y = a·bⁿ

1. y = number of snails after x years
2. a = starting number of snails = 80
3. b = growth factor = 3
4. n = years

Plug in the numbers to get the equation.