The first three patterns of a sequence of dots is shown below

If the pattern continues indefinitely, which of the following expressions can be used to determine the number of dots in the nth term of the sequence?

Question

The first three patterns of a sequence of dots is shown below

If the pattern continues indefinitely, which of the following expressions can be used to determine the number of dots in the nth term of the sequence?

anonymous · Answer

attachment

ash2326 · Answer

n          dots               explanation
1            3                    1$\times$1+2
2             6                   2$\times$2+2
3            11                  3 $\times$ 3+2
Can you find the no. of dots for n=n???

anonymous · Answer

n(n + 1) 
  n2 + 2 
  n(n + 2) 
  3n

anonymous · Answer

which one?

ash2326 · Answer

@selenamalter for n= n
we'll have n$\times$n+2=n^2+2

anonymous · Answer

So would it be C?

anonymous · Answer

A. n(n + 1) 
 B.  n2 + 2 
 C.  n(n + 2) 
 D.  3n

ash2326 · Answer

It'd be b
You have written the option incorrectly=n^2+2

anonymous · Answer

oh