Una fábrica elabora peceras rectangulares de dos tamaños; pequeñas, con aristas que miden x, y grandes, con aristas que miden x+6. ¿qué expresión representa el volúmen de la pecera grande?

¿cuál es la diferencia de volumen entre los dos tamaños de peceras? Exprèsala como un polinomio desarrollado.​

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?