Answer
See graph
Work Step by Step
We are given the functions:
$R(x)=\dfrac{3}{4}x$
$B(x)=\dfrac{1}{15}x^2$
$T(x)=R(x)+B(x)$
$T(x)=\dfrac{3}{4}x+\dfrac{1}{15}x^2$
Graph $R(x), B(x)$ and $T(x)$ on the same set of axes:
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