Thaddeus models the number of hours of daylight in his town as D(t) = 2.5sin(pie/6t) + 12, where Dis the number of daylight hours and tis
the time in months since January 1,
What are the least and greatest numbers of daylight hours over the course of
a year?
A. Least: 6 hours, greatest: 12 hours
B. Least: 2.5 hours, greatest: 12 hours
C. Least: 9.5 hours, greatest: 14.5 hours
D. Least: 7.25 hours, greatest: 14.5 hours