Question

Write an expression to describe the sequence then find the 10th term
-3,-6,-9,-12

Answer 1

-3= -3(1)
-6=-3(2)
-9=-3(3)
-12=-3(4)

therefore, the sequence is -3n where n=1,2,3.....

Answer 2

the 10th term is -3(10) =-30

Answer 3

Or either an AP..

Answer 4

a+(n-1)d
a=first term
d=common difference
n=nth term

Answer 5

^identify those @Numbers can you? :)