Question

write an explicit definition for the sequence -2,1,4,7,...

Answer 1

on subtracting 2nd term (1) with 1st term(-2) I got 3
similarly on subtracting 3rd term (4) with 2nd term (1) I got again 3
Which suggest its an Arithmetic series as the common difference is same
so general equation of this series is:
\[\alpha= a+(n-1)*d
where, \alpha is the nth term and a is 1st term, is the common difference\]

Answer 2

is it an=2+(n=3)

Answer 3

or 2=(n-3)

Answer 4

2+(n-3)

Answer 5

I met -2

Answer 6

yes its right @bowershe

Answer 7

last one

Answer 8

the choices are
an=-2+3n
an=-2+(n-3)
an=-2+(n+3)
an=2+3(n-1)

Answer 9

Thanks

Answer 10

ok