Answer :
[tex]p(t)=0.06t^4+0.3t^3+7t^2[/tex]
after 2 days(48 hours):
[tex]\begin{gathered} t=48 \\ p(48)=0.06(48)^4+0.3(48)^3+7(48)^2 \\ p(48)=318504.96+33177.6+16128 \\ p(48)=367811 \end{gathered}[/tex]