South Dakota Content Standards
7.EE. Expressions and Equations
7.EE.A. Use properties of operations to generate equivalent expressions.
7.EE.A.4. Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.
7.EE.A.4.b. Solve word problems leading to inequalities of the form px + q > r, px + q ≥ r, px + q < r, and px + q ≤ r where p, q, and r are specific rational numbers. Graph the solution set of the inequality and interpret it in the context of the problem. For example, as a salesperson, you are paid $50 per week plus $3 per sale. This week you want your pay to be at least $100. Write an inequality for the number of sales you need to make, and describe the solutions.