GRE Exam Numerical Ability Geometry

Which of the following is an equation of the line tangent to the graph of y = x + e^x at x = 0 ?
(A) y = x
(B) y = x + 1
(C) y = x + 2
(D) y = 2x
(E) y = 2x 1

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GRE Other Question

The xy-plane, the curve with parametric equations x = cost and y = sin t, 0 =< t =< Pi has length
(A) 3
(B) Pi
(C) 3 Pi
(D) 3/2
(E) Pi/2
If V and W are 2-dimensional subspaces of R^4, what are the possible dimensions of the subspace V Intersection W?
(A) 1 only
(B) 2 only
(C) 0 and 1 only
(D) 0, 1, and 2 only
(E) 0, 1, 2, 3, and 4