## Intermediate Algebra (6th Edition)

The algebraic expression that is to be used for completing the table is $$\dfrac{100x+5000}{x}$$ In this case, $x$ is equal to $10$, $100$ and $1000$ Substitute each value of $x$ into the expression and evaluate to complete the table: $x=10$ Cost per Bookshelf $=\dfrac{100(10)+5000}{10}=600$ dollars $x=100$ Cost per Bookshelf $=\dfrac{100(100)+5000}{100}=150$ dollars $x=1000$ Cost per Bookshelf $=\dfrac{100(1000)+5000}{1000}=105$ dollars The table is shown below: