X-7 < -3
Remember that the less than or equal to has a line underneath it!
I know step 5 is (x-2)(x+2)(x+1)
But I don't know what step 4 is.
Im stuck.
A
this is a geometric sequence since there exists a common ratio r between the terms
r =
=
=
= 3
B
to obtain the next term in the sequence multiply the previous term by 3
= 3
← recursive rule
C
the n th term of a geometric sequence is
=

where
is the first term in the sequence
= 7 ×
← explicit rule