Ablue whale traveled 495 feet the first time it was sighted. the second time it was sighted, the blue whale had traveled 6 times as far as the first time. how far did the blue whale travel altogether?

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)