In a mountain range of California, the percent of moisture that falls as snow rather than rain can be approximated by the function p(h) = 82 in (h) - 649.
where h is the altitude in feet and p(h) is the percent of an annual snow fall at the altitude h. Use the function to approximate the amount of snow at the
altitudes 3000 feet and 6000 feet.

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)