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The polynomial y=−0.73x4+3.1x3+26.5 describes the billions of flu virus particles in a person's body x days after being infected. Find the number of virus particles, in billions, after 3 days. There are billion virus particles in a person's body 3 days after being infected.

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pedrocarratore

Answer:

51.07 billion virus particles

Step-by-step explanation:

The equation that describes the number, in billions, of flu virus particles in a person's body x days after being infected is:

[tex]y=-0.73x^4+3.1x^3+26.5[/tex]

For x = 3 days:

[tex]y(3)=-0.73*3^4+3.1*3^3+26.5\\y(3) = 51.07\ billion[/tex]

Therefore, after 3 days, there will be 51.07 billion virus particles in a person's body.

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