In order to determine the temperature at 11:00 pm, consider that at that time the temperature reduces 5 degrees related to the temperature at 6:00 pm.
Then, subtract 5 to the temaperature at 6:00 pm, which is 5°F:
5°F - 5°F = 0°F
Hence, the temperature at 11:00 pm is 0°F
Answer:
$2467.50 would be in the account after 15 years.
