### Exponential Function V(t)

A fax machine is purchased for $5,800. Its value each year is about 80% of the value of the preceding year. So after t years the value, in dollars, of the fax machine, V(t), is given by the exponential function V(t) = 5800 (0.8)t. a. Give a sketch of the graph of the function V(t). Your graph can be a "rough draft".