## Introductory Algebra for College Students (7th Edition)

Let's translate this statement into an algebraic expression. "The sum of $x$ and $6%$ of $x$" means: $$x + 6%x$$ Let's change the percentage into a decimal by dropping the percentage sign and moving the decimal two places to the left: $$x + 0.06x$$ "Is at least $80$" can be translated as: $$\geq 80$$ Let's put the two sides together: $$x + 0.06x \geq 80$$ We can see that the two inequalities are now exactly the same; therefore, this statement is true.