## Algebra and Trigonometry 10th Edition

a) $L_2$; b) $L_1$; c) $L_4$; d) $L_3$
a) $f(p)$: a $50\%$ discount is applied We notice that $p=10$ corresponds to $S=5$, and $p=15$ corresponds to $S=15$, so $f(p)$ matches $L_2$. b) $g(p)$: $\$5$is applied. We notice that$p=20$corresponds to$S=15$, and$p=15$corresponds to$S=10$, so$g(p)$matches$L_1$. c)$(g\circ f)(p)(g\circ f)(p)$matches$L_4$. d)$(f\circ g)(p)$We notice that when applying a discount of$\$5$, and then a discount of $509\%$ to $p=20$, we get $S=7.5$, so $(g\circ f)(p)$ matches $L_3$.