Oil is leaking out of a car at a rate of $y = 0.2^t$ liters/hour for $0 ≤ x ≤ t$.

1. Sketch a graph of this situation. Label the units on the axes.

   Graph (a):

   

2. Shade the area under the curve for $0 ≤ t ≤ 1$. What does the shaded area represent? What are the units?

   Hint (b):

   Liters per hours multiplied by hours equals __________________ ?

   Answer (b):

   The number of liters that leaked out between $0$ and $1$ hours. The units are liters.