Answer
$\frac{-4}{7}\leq x$
Work Step by Step
$g(x)\leq f(x)\\\frac{1}{4}(8-12x)\leq\frac{2}{5}(10x+15)\\2-3x\leq4x+6\\2\leq7x+6\\-4\leq7x\\\frac{-4}{7}\leq x$
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