Question

A function has a constant doubling time. What type of function does this
represent?

Answer 1

an exponential function

Explanation:

An exponential function has the characteristic that it increases by a constant factor when the independent variable increases by a constant increment. The function you describe is an exponential function.

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It can be written in the form ...

f(t) = f(0)·2^(t/d) . . . . . where d is the doubling time