As a salesperson, you are paid $50 per week plus $2 per sale. This week you want your pay to be at least $100. What is the minimum number of sales you must make to earn at least $100?
You can set up an equation to represent what you make versus sales and pay.
2x + 50 = 100
where x equals the number of sales. Simplifying the equation reveals that x = 25, so the minimum number of sales required to make 100 dollars is 25 sales.