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?