Final answer:
The temperature in San Antonio, TX increased by 1.25 degrees per hour until 7:00 PM and then dropped by 19 degrees at midnight. The temperature at midnight was 62°F. Therefore, the correct option is d).
Step-by-step explanation:
The temperature in San Antonio, TX starts at 66°F at 7:00 AM and increases by 1.25°F per hour until 7:00 PM.
From 7:00 PM to midnight, the temperature remains constant. At midnight, the temperature drops by 19°F.
To find the temperature at midnight, we need to calculate the total temperature increase from 7:00 AM to 7:00 PM and then subtract the temperature drop of 19°F.
Temperature increase from 7:00 AM to 7:00 PM
= 12 hours x 1.25°F/hour
= 15°F
Temperature at midnight = Temperature at 7:00 PM + Temperature increase from 7:00 AM to 7:00 PM - Temperature drop at midnight
= 66°F + 15°F - 19°F
= 62°F
The temperature at midnight was 62°F. Therefore, the correct option is d).