The phrase "twice the difference of a number and 5" can be written as which variable expression?

Let the unknown number be x.

Hence,

Twice the difference of a number and 5 = 2 * (x - 5) = 2(x - 5) = 2x - 10

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

Where is the table?