Calculate the Fourth Term in the Sequence 5n-5

To solve this problem, we need to determine the fourth term in the sequence given by the expression $5n - 5$.

Step 1: Identify the term's position
The problem asks for the fourth term, which means we need to find $a_4$ where the term number $n = 4$.

Step 2: Substitute the position into the sequence formula
Using the formula for the sequence, $a_n = 5n - 5$, we substitute $n = 4$ into the expression:

$a_4 = 5(4) - 5$

Step 3: Simplify the expression
Now, we calculate:

$a_4 = 20 - 5 = 15$

Therefore, the fourth term in the sequence is $15$.