## Intermediate Algebra for College Students (7th Edition)

Consider the inequality $3.2 \leq 0.1d +0.25 q+0.05 n\leq 5.45$ This implies that $3.2 \leq 0.1(2x-3) +0.25(2x+2)+0.05x\leq 5.45$ or, $3.2 \leq 0.2x-0.3 +0.5x+0.5+0.05x\leq 5.45$ or, $3.2 \leq 0.75x+0.2\leq 5.45$ or, $3.2-0.2 \leq 0.75x\leq 5.45-0.2$ Hence, $4 \leq x\leq 7$, that is, 4 and 7 nickles