Follow this link please! It is an interactive question that I just cannot figure out
webwork.math.nau.edu/webwork2/CFisher_136/Continuity/3/?user=aed73&effectiveUser=aed73&key=KwyySMKGHvKe32dogu0ViC6rI90u7iI9&displayMode=jsMath&showOldAnswers=1
webwork.math.nau.edu/webwork2/CFisher_136/Continuity/3/?user=aed73&effectiveUser=aed73&key=KwyySMKGHvKe32dogu0ViC6rI90u7iI9&displayMode=jsMath&showOldAnswers=1