The exponential function that has a decreasing graph is given by:
[tex]f(x) = 1.25(0.3)^x + 7[/tex]
An exponential function is modeled by:
[tex]y = ab^x[/tex]
In which:
The parameter b defines if the graph is increasing or decreasing, as follows:
The function that has |b| < 1, thus decreasing, is given by:
[tex]f(x) = 1.25(0.3)^x + 7[/tex]
In which b = 0.3, hence |b| = 0.3.
More can be learned about exponential functions at https://brainly.com/question/25537936
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