Confuscius was born in 551 bc and died 72 years later. what year was that?

He was born some time in 479 BC, because 551-72=479. Remember, BC is backwards from normal years!

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8