\textbf{117.} For the function with formula $f(x) = (x+2)\sqrt{4x+1}$, the average rate of change of the function on the interval $[0,2]$ is how much greater than the instantaneous rate of change at $x = \dfrac{3}{4}$?
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(1) $0.1$ \hspace{2cm} (2) $0.15$ \hspace{2cm} (3) $0.20$ \hspace{2cm} (4) $0.25$
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