Answer: 15,599
Step-by-step explanation:
The information given by the statement is:
• Mt. Snowy has an altitude of 15,599 feet.
,
• Green Valley has an altitude of 243 feet below sea level.
The integer (the number without decimals) that represents the altitude of Mt. Snowy is given by the problem, that altitude is: 15,599 feet. And the integer is 15,599.