The variable t represents the temperature at 6 p.m.
Which equation would best model the word problem below?
The temperature at the summit of Mt. Washington dropped 19°F between 6 p.m. and 10 p.m. The temperature at 10 p.m. was –12°F. What was the temperature at 6 p.m.?
A.
12 – 19 = t
B.
19 + 12 = t
C.
t – 19 = –12
D.
19 – t = –12