Using scientific notation, the power of 10 that should be put on the label is of [tex]10^7[/tex], hence x = 7.
A number in scientific notation is given by:
[tex]a \times 10^b[/tex]
With the base being [tex]a \in [1, 10)[/tex].
In this problem, we don't want to increase the base values much. Panama's population can be represented as:
[tex]4 \times 10^6 = 0.4 \times 10^7[/tex]
Hence, the power of 10 that should be put on the label is of [tex]10^7[/tex], hence x = 7.
More can be learned about scientific notation at https://brainly.com/question/16394306
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