184k views
21 votes
On day one, a bacteria colony begins with 20 bacteria and the number of bacteria triples each day. Which explicit equation can be used to determine the number of bacteria after n days?

A. a n = 3(20)n
B. a n = 20(3)n
C. a n = 3(20)n – 1
D. a n = 20(3)n – 1

User Joelhardi
by
6.6k points

1 Answer

9 votes
The answer is letter a
User Vikas Lalwani
by
7.2k points