We need to find the value V of a machine, given by:

where C is the original cost, t is the number of years, and r is the rate of depreciation.
For this problem, we have:

Then, using the above information in the formula, we obtain:
![\begin{gathered} V=\operatorname{\$}1963(1-0.2)^3 \\ \\ V=\operatorname{\$}1963(0.8)^3 \\ \\ V=\operatorname{\$}1963(0.512) \\ \\ V\cong\operatorname{\$}1005.06 \end{gathered}]()
Therefore, rounding to the nearest cent, we obtained:
Answer: $100.06