Option (D) The number of bacteria decreases by 7% each hour is correct.
What is an exponential function?
It is defined as the function that rapidly increases and the value of the exponential function is always a positive. It denotes with exponent [tex]\rm y = a^x[/tex]
where 'a' is a constant and a>1
As we know, the exponential function increases rapidly according to the exponent.
It is not a linear function, and it never gives a negative value if the value of a>0
As the no other information was given.
Thus, option (D) The number of bacteria decreases by 7% each hour is correct.
Learn more about the exponential function here:
brainly.com/question/11487261
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