Find the mean, median, mode, and range of this data: 49, 49, 54, 55, 52, 49, 55. if necessary, round to the nearest tenth

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?