Question

The variable t represents the temperature at 3 p.m. Which equation would best model this word problem?  The temperature at the summit of Mt Mitchell dropped 23°F between 3 p.m. and 9 p.m. If the temperature at 9 p.m. was –10°F, what was the temperature at 3 p.m.?  

A.t – 23 = –10  
B.10 – 23 = t  
C.10 + 23 = t  
D. 23 – t = –10
Please Explain the answer

Answer 1

If at 3 pm was t and dropped 23 degree, and then was -10 it for sure is answer A
We can see it because first was t, then dropped 23 (subtract 27) and when it dropped we get -10
so
t-23=-10