After accelerating for 5 seconds at a rate of 20 m/s2 a plan is now traveling 150 m/s. How fast was the plane going before it sped up? Vf= Vi= t= a=

Wow. that is a really cool 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