The national weather service keeps track of the temperature for a given day in a given city. it also keeps track of this information at certain times during a given day. the following temperatures were recorded on a january day in new york city. time of day 10 am 12 noon 2 pm 4 pm 6 pm 8 pm 10 pm temperature 30 35 36 36 34 30 28 over which period(s) of time is the average rate of change zero? what, if anything, can you conclude about the actual temperature fluctuation within this period? a. the ave