Evaluate the given integral by changing to polar coordinates. X da d , where d is the region in the first quadrant that lies between the circles x2 y2 = 16 and x2 y2 = 4x.

Bc equals mb that should be your answer

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