Example A.1.1.
Steve bought a Blu-Ray player for $269 and a number of discs at $14 each. Write an expression for Steve’s total bill, (before tax), in terms of the number of discs he bought,
Solution.
We want an equation of the form
where Steve’s bill started with the Blu-Ray player or $269, and then increased by a number of discs at a rate of $14 each. Substituting those values, we have