Answer
$f(x)=10(3)^{x}$
Work Step by Step
When $x$ increases by $1,\quad f(x)$ is tripled
(multiplied by $3.$)
$\Rightarrow b=3$
$f(0)=10$
$Ab^{0}=10\Rightarrow \quad A=10$
Thus,
$f(x)=10(3)^{x}$
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