Michelle will be 72 years old in eighteen years. how old is michelle now? a. 90 years old b. 54 years old c. 36 years old d. 49 years old

Subtract 18 from 72 to get Michelle's current age.

72 - 18 = 54

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