Algebra Examples

$a_{n} = 4 (4 n - 3)$

Step 1

Substitute in the value of $n$ to find the $n$ th term.

$a_{3} = 4 (4 (3) - 3)$

Step 2

Multiply $4$ by $3$ .

$a_{3} = 4 (12 - 3)$

Step 3

Subtract $3$ from $12$ .

$a_{3} = 4 \cdot 9$

Step 4

Multiply $4$ by $9$ .

$a_{3} = 36$