Answer:
B) Let x = yesterday's body temperature
x + 2.5° = 100.7 °F
x = 98.2 °F
Explanation:
We want to determine Dud's body temperature yesterday. Therefore, the unknown variable is:
- Let x = yesterday's body temperature
If Dud's body temperature today is 2.5° higher than yesterday's body temperature, then his body temperature today is the sum of yesterday's body temperature and the increase:
To solve the equation, subtract 2.5° from both sides of the equation:
- x + 2.5° - 2.5° = 100.7 °F - 2.5°
- x = 98.2 °F
Therefore, Dud's body temperature yesterday was 98.2 °F.