In this problem, we have an exponential growth function of the form
[tex]y=a(1+r)^x[/tex]where
a=500
r=0.7
substitute
[tex]\begin{gathered} y=500(1+0.7)^x \\ y=500(1.7)^x \end{gathered}[/tex]For x=6 days
substitute
[tex]\begin{gathered} y=500(1.7)^6 \\ y=12,069 \end{gathered}[/tex]therefore