During a hurricane, a brick loose from the top of a chimney, 38 feet above the ground. As the brick falls, its distance from the ground after t seconds is given by

1. Suppose d(t) represents the height of a brick which began to fall at noon. What might d(t)-15 represents. d(t-1.5)?
2. Using algebra, determine when the brick hits the ground:
   1. If d(t) represents the distance of the brick from the ground.
   2. If d(t)-15 represents the distance of the brick from the ground
3. Use one of your answer in part d) to determine when the brick hits the ground if d(t-1.5) represents the distance above the ground at time t.