The temperature at the end of the day was 64 degrees. The temperature had increased twice during the day, once by 8 degrees and another time by 4 degrees. Which expression shows what the temperature was at the start of the day? (1 point)

Answer 1

Let x be the temperature at the start of the day.
After the first increase, the temperature is x + 8 degrees.
After the second increase, the temperature is (x + 8) + 4 = x + 12 degrees.
The temperature at the end of the day is x + 12 = 64 degrees.
Subtracting 12 from both sides, we get x = 52 degrees.
So, the expression that shows the temperature at the start of the day is x = 52 degrees. Answer: \boxed{52}.