The polynomial y = -0.77⁴ +2.9x² +25.6 describes the

Last updated: 7/17/2022

The polynomial y = -0.77⁴ +2.9x² +25.6 describes the billions of flu virus particles in a person's body z days after being infected.Round answer to 2 decimal places. There are billion virus particles in a person's body 3 days after being infected.