Assume the exponential function f ( x ) = 275 ⋅ 4 x describes the number of bacteria on a surface after x days. How many bacteria were there at the beginning?

Answer 1

I assume you meant to say f(x) = 275 * 4^x

So what is x at the beginning? You can calculate the value of the function at that x. Send your answer; we can guide you further if you get it wrong.