Question

Task Fred has some colored kitchen floor tiles and wants to choose a pattern using them to make a border around white tiles. He generates patterns by starting with a row of four white tiles. He surrounds these four tiles with a border of colored tiles (Border 1). The design continues as shared in the google slide presentation. Fred writes the expression 4(b−1)+10 for the number of tiles in each border, where b is the border number, b≥1. A. Explain why Fred's expression is correct. B. Emma wants to start with five tiles in a row. She reasons, "Fred started with four tiles and his expression was 4(b−1)+10. So if I start with five tiles, the expression will be 5(b−1)+10. Is Emma’s statement correct? Explain your reasoning. C. If Emma starts with a row of n tiles, what should the expression be?

Answer 1

Answer:

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