Answer
$46\%$ growth.
Work Step by Step
Growth or decay rate $r=b-1$ where $r$ is a percentage written as a decimal and $b$ is the base of an exponential function of the form $h(x)=a\cdot b^{x}$.
Given $h(x)=3(1.46)^{x}$
$\implies b=1.46$
$r=b-1=1.46-1=0.46$
Or $r=0.46\times100 \%=46\% $
$r$ is positive. So, there is $46\%$ growth.