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