Practice problem
Which is the compound inequality expressing (−∞,15]∪[45,∞)(-\infty,15]\cup[45,\infty)(−∞,15]∪[45,∞)?
x<15x<15x<15 and x>45x>45x>45
x≤15x\le15x≤15 or x≥45x\ge45x≥45
x>15x>15x>15 and x<45x<45x<45
Type a concept, like “slope” or “photosynthesis”.