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Incredible shrinking dollar

Act 1

A video shows a dollar being placed on a photocopier, the scale on the photocopier is shown to be 75%. Once the photocopy prints out, it replaces the dollar on the photocopier and the process is repeated three times. What will the dollar bill look like after getting reduced that many times?

Act 2

Further information is given by showing the dimensions of a dollar bill.

Act 3

A video shows the situation with an overlay of the size of each successive copy relative to previous copies.

Sequel

How many times would you have to copy the bill before it became invisible?

If you wanted to expand this bill back up to normal size with exactly one copy, what percentage would you have to set on the copier?

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