## Algebra and Trigonometry 10th Edition

$\dfrac{1}{4}$
Let $f(x)$ be the function. Now, $f (-2)=3$ or, $k (2 -(-2)-(2)^3)=3$ or, $k(2+2+8)=3 \implies k =\dfrac{3}{12}$ Thus, $k=\dfrac{1}{4}$