A person standing a certain distance from an airplane with four equally noisy jet engines is experiencing a sound level of 141 dB. What sound level would this person experience if the captain shut down all but one engine? [Hint: Add intensities, not dB's.]

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane