Help please with step 5

Step 5?

5+5 = 10

Step-by-step explanation:

Step-by-step explanation:

given that a bacteria population starts with 80 bacteria and doubles every four hours,

The function representing the number of bacteria after t hours

=

We are to find the inverse of the function

i.e. we must make t = g(n) where g is a function of n.

Take log on both sides.

this is the inverse function.