What Are Intervals?Menu1DefinitionInterval on a Number LineActivity Set 12Intervals as InequalitiesActivity Set 13Interval Notation Using Square Brackets and ParenthesesActivity Set 14Open IntervalsActivity Set 15Closed IntervalsActivity Set 16Half-open IntervalsActivity Set 17Union of IntervalsActivity Set 1What is the union of the two intervals?CheckResetContinue8Intersection of IntervalsActivity Set 19Boss Battle
