Answer :
The true statement is (b) a whole number constant could have been subtracted from the exponential expression.
An exponential function is represented as:
[tex]y = ab^x[/tex]
The asymptote of the above function is 0.
However, consider the following vertically translated function
[tex]y = ab^x + c[/tex]
The horizontal asymptote of the above function is c.
So, when an exponential function has an asymptote of y = -3, then it means that 3 is subtracted from the function [tex]y = ab^x[/tex]
Hence, the true statement is (b)
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