On saturday, enrique charges $2 for every 1/6 hour he spends running errands. he earned $50 last saturday. he picked up dry cleaning for mrs. abel for 4/6 hour, ran to the post office for mr. kovac for 1 1/6hours, and swept up the lobby of the building for the apartment manager for 5/6 hour. he got a $4 tip from mr. kovac. how long did it take him to walk mrs. camacho's dog and pick up her groceries? show your work.

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)