I prefer D.
It's clear that Kevin took (1/4)x.
Keith took (1/4)x -> kevin's amount
* 2 -> twice.
-1 -> 1 less.
So Kevin + Keith = (1/4)x + (1/4)x * 2 - 1 = (3/4)x - 1.
I think compatible numbers
Using an exponential function, it is found that the multiplier that would allow you to predict the population of bacteria after 2 hours is of 9.
<h3>What is an exponential function?</h3>
An exponential function is modeled by:

In which:
In this problem, the bacteria triples every hour, hence the rate of change is b = 3, and the equation is:

Hence, after 2 hours:

Which means that the multiplier is of 9.
More can be learned about exponential functions at brainly.com/question/25537936
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Answer:
no
Step-by-step explanation: