Question

Which of the following functions represents an exponential decay with a 15% rate of change where A represents the initial value and x represents time in years

Answer 1

The function that represent this exponential decay is given as y = A(0.85)ˣ

What is an exponential function?

An exponential function is in the form:

y = abˣ

Where a is the initial value and b is the multiplication factor.

Given that A is the initial value, there is a decay of 15%, hence:

b = 100% - 15% = 0.85

The function that represent this exponential decay is given as y = A(0.85)ˣ

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