## Intermediate Algebra (6th Edition)

There were about $9.7$ billion pounds of cheese produced in the United States in 2007.
2007 is 4 years after 2003 so $x=4$. Substitute 4 to $x$ in the given equation to have: $\\y=8.6(1.03)^x \\y=8.6(1.03)^4 \\y=9.679375766 \\y\approx 9.7$