Answer:
To calculate how many tickets Elena needs to sell to raise more than $180, we can set up an inequality equation. Let's denote the number of tickets she needs to sell as "x".
Since Elena sells each ticket for $15, the total amount she raises can be found by multiplying the price per ticket by the number of tickets sold: 15x.
To meet her goal of raising more than $180, we can write the inequality equation: 15x > 180.
To solve for "x", we can divide both sides of the inequality by 15: x > 12.
This means Elena needs to sell more than 12 tickets to raise more than $180.
Keep in mind that the inequality is strict (">") because Elena wants to raise more than $180. If the inequality was not strict (">="), Elena would need to sell at least 12 tickets to reach $180.