The foci of a hyperbola are (-4,5) and (2,5). What is the x-coordinate of the center of the hyperbola?

There’s not enough information to answer this question? ?

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

X> -2 is the simplified version.