Answer:
The answer is B.500
Step-by-step explanation:
The original equation containing unknown variables would be 500(t) (with "t" representing the number of days)
So if you fill the variable in with a 2, that means it's been 2 days with the increase of 500 bacteria each day.
That means the initial number of bacteria must be 500.
If it's been 2 days and you want to determine the bacteria number, then multiply 500 by 2 and you get yourself 1000 bacteria.
