Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term.
–8, –16, –24, –32, ...
The expression to describe the sequence would be -8n.
To describe the given sequence, we can see that each term is obtained by multiplying the term's position, n, by -8. Therefore, the expression to describe this sequence is:
an = -8n