Question

Can someone PLEASE help me with this?? I don't get it.
The diameter of a bacteria colony that doubles every hour is represented by the graph below. What is the diameter of the bacteria after 8 hours?

127 bacteria
255 bacteria
511 bacteria
1,023 bacteria

Answer 1

Here is the graph!

Answer 2

this is exponential growth
the total bacteria after 2 hours is 2^2 , after 3 its 2^3 , after 4 , 2^4 etc

Answer 3

after n hours it is 2^n

plug in the value of n to get your answer