A sequence can be described using the rule an = - 2 + 3 (n-1). Which is the

value of the 20th term in this sequence?

Answer:The 20th term of the arithmetic sequence is 55

Step-by-step explanation:

A sequence can be described using the rule:

an = - 2 + 3 (n-1)

Where

an is the value of the nth term of the arithmetic sequence.

- 2 is the first term of term of the sequence.

n is the number of terms in the sequence.

To determine the 20th term, we will substitute n = 20 into the equation. It becomes

a20 = - 2 + 3 (20 - 1)

a20 = - 2 + 3*19

a20 = - 2 + 57 = 55