Question

There are 3000 bacteria in a dish. The population decreases by 20% per day. How many bacteria are left after 3 days?

Answer 1

This is an exponential equation of the form

`F=Ir^t \\ \\</p><p>F=3000(0.8)^3 \\ \\</p><p>F=1536`

Answer 2

1536 bacteria

Explanation:

3000×0.80³ = 1536