7.3.A.03 - Writing Products as Sums and Sums as Products – Exit Ticket

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A square fountain area with side length s ft. is bordered by two rows of square tiles along its perimeter as shown. Express the total number of grey tiles (the second border of tiles) needed in terms of s three different ways.

From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 3, Topic A, Lesson 3. Internet. Available from https://www.engageny.org/resource/grade-7-mathJmat...; accessed 06/Oct/2015.