2x plus 4 less than or equal to 24 = what?
\(2x+4 \leq 24\ \ \ \ \ | subtract\ 4\\\\ 2x \leq20\ \ \ | divide\ by\ 2\\\\ x \leq 10\\\\ x\in(-\infty,10]\)
\(2x+4\leq24\\ 2x\leq20\\ x\leq10\)