p and q are odd integers between 20 and 50.
For these values, is 5p–q>2p+15 always true, sometimes true or never true?
Thinking about Inequalities
Common Core Standards:
Lim, K. H. (2006). Characterizing students' thinking: Algebraic inequalities and equations. Paper presented at the 28th annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, Mérida, México: Universidad Pedagógica Nacional.