PLEASE HELP 3844893 POSTING THIS ND I HAVENT BEEN HELPED

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

Ineed with number 6 , explain how to get 1978

Write the expression 7x^3-28xy^2 as the product of 3 factors