One year after graduating from college, sam earned $42,000. each year, he earned $4000 more. what function, written in sequence notation, models sam's earnings n years after graduating college? an=4000n+38,000 an=38,000n+4000 an=42,000n+4000 an=4000n+46,000

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)