Using the Formula 3n+5: Discover the 3rd Term

Question

$3n+5$

What is the third term in the sequence above?

00:00 Find member 3

00:05 Let's substitute the appropriate member's position in the formula and solve

00:18 Always solve multiplication and division before addition and subtraction

00:26 And this is the solution to the question

To find the third term in the sequence defined by $3n + 5$ , we follow these steps:

Step 1: Identify the term number we are interested in. We need the third term, so set $n = 3$ .
Step 2: Use the sequence formula $a_n = 3n + 5$ .
Step 3: Substitute $n = 3$ into the formula:

$a_3 = 3(3) + 5$

Step 4: Perform the arithmetic calculations:

$3(3) = 9$
Adding 5 gives $9 + 5 = 14$ .

Therefore, the third term in the sequence is $14$ .