For each pattern shown below,
(i) Draw the next figure in the sequence.
(ii) How many basic units are there in Step \(10\)?
(iii) Write an expression to describe the number of basic units in Step \(y\).
Answer:
Question (i):
Answer variants:
The next figure in the sequence is
Question (ii):
The number of basic units in step \(10\) \(=\) .
Question (iii):
Among the following, which algebraic expression represents the number of units in step \(y\)?