Of 200 people surveyed, 80 percent own a cellular phone and 45 percent own a pager. if all 200 people surveyed own a cellular phone, or a pager, or both,
what percent of those surveyed either do not own a cellular phone or do not own a pager?
(a) 35%
(b) 45%
(c) 55%
(d) 65%
(e) 75%

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x,y,z) = (1,-x,z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)