"Place a point on your paper and then use a compass to construct a circle" is the way you should start the construction when <span>constructing an inscribed polygon with a compass and straightedge. The correct option among all the options that are given in the question is the last option or the fourth option. </span>
The formula
a(n) = 2 - 5(n-1)
is in the form
a(n) = a1 + d(n-1)
where
a1 = first term = 2
d = -5 = common difference
The first term is carried over to the recursive formula. We start with a1 = 2. The next term after that is found by subtracting 5 from the previous term. So
second term = (first term) - 5
third term = (second term) - 5
and so on
The recursive step would be
a(n) = a(n-1)-5
So that's why the answer is choice C
