Given the arithmetic sequence, what is a18?
18,14,10
a18=

18 is the starting term and the common difference is -4
Hope it helped!!!

The first term is a1 = 18
The common difference is d=-4

And the nth term of an arithmetic sequence is given by
an = a1 + (n-1)d

Plugging in what we know:

an = 18 + (n-1)(-4)

So find the 18th term of this arithmetic sequence,
replace n with 18,

a18 = 18 + (18-1)(-4)

and simplify.

The answer would be -3.9> -4.5