0.025 in expanded form

Expanded Notation Form:
0
+ 0.0
+ 0.02
+ 0.005

factor form
0 × 100
+0 × 10-1
+2 × 10-2
+5 × 10-3

I’d say letter a..

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