mount Whitney is 14,494 feet above sea level. Death Valleyis 282 feet below sea level what is the difference between these two elevations

If sea level is 0, and Mt. Whitney is 14,494 ft. above sea level. The difference between those two elevations is 14,494 feet. If death Valley is 282 feet below sea level, add the two to get the total distance away from each other. Your answer is 14,776.