The array named dolphins records the number of dolphins sigh…

The array named dolphins records the number of dolphins sighted over the course of a week. However, for every dolphin you can see, there are about six more dolphins below the surface.What technique could you use to multiply each entry in the array by seven? Assume it doesn’t matter if the resulting array is the original array or a new array.const dolphins = [25, 40, 0, , 35, 100, 1];

Code example 11-2const sightings = [[“Fri”, “Dolphin”, “blue…

Code example 11-2const sightings = [[“Fri”, “Dolphin”, “blue Whale”],                   [“Sat”, “Fin Whale”],                   [“Sun”, “Blue Whale”, “Dolphin”, “sea lion”],                   [“Mon”, “Orca”, “dolphin”, “Dolphin”]]; Refer to code example 11-2. What would be printed to the console after running the following statements?sightings.sort();console.log(sightings[1][0]);