The variable t represents the temperature at 4 p.m. Which equation would best model the word problem below? The temperature at the summit of Mt. Mansfield dropped 17°F between 4 p.m. and 11 p.m. The temperature at 11 p.m. was –11°F. What was the temperature at 4 p.m.?
a. 17 + 11 = t
b. 11 – 17 = t
c. t – 17 = –11
d. 17 – t = –11