If anybody could please help me with the following problems I'd greatly appreciate it.

1. A point moves along the curve y = x^2 + 1 so that the x-coordinate is increasing at the constant rate of 3/2 units per second. The rate, in units per second, at which the distance from the origin is changing when the point has coordinates (1,2) is equal to...

2.(multiple choice) The area bounded by the curve y = 1/x+1, the axes, and the line x = e - 1 equal to: a) 1 - (1/e^2) b) ln(e - 1) C) 1 D) 2 or E) 2 (square root e + 1) - 2

3. A solid is cut out of a sphere of radius 2 by two parallel planes each 1 unit from the center. The volume of this solid is.....

Thanks for any help!