The minutes of daylight each day of the year in a certain northern town are approximately modeled by the function
f (x) = -1 (2 - 173)2 + 1424
Where u represents the day of the year (January 1 is x=1) and f (2) represents the minutes of sunlight.
June 22
-1000
100
2
00-
300-
The vertex of this function means that on the longest day of the year --- June 22nd (day 173)--this town saw
minutes of sunlight.