What Are Intervals?Menu1DefinitionInterval on a Number LineActivity Set 12Intervals as InequalitiesActivity Set 13Interval Notation Using Square Brackets and ParenthesesActivity Set 1Do the expression and the interval on the number line agree?CheckResetContinue4Open IntervalsActivity Set 15Closed IntervalsActivity Set 16Half-open IntervalsActivity Set 17Union of IntervalsActivity Set 18Intersection of IntervalsActivity Set 19Boss Battle
