Matt has 3 dark t-shirts and 6 white t-shirts. First, he will close his eyes to select a shirt. If the shirt is dark, Matt will wear black pants. If the shirt is white, Matt will
toss a coin. If the coin lands on heads, he will wear jeans. If the coin lands on tails, he
will wear shorts.
What is the probability that Matt will wear a white shirt to school?

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)