You manage a buffet at a local restaurant. You charge $10 for the buffet. On average, 14 customers choose the buffet as their meal every hour. After surveying several customers, you have determined that for every $1 increase in the cost of the buffet, the average number of customers who select the buffet will decrease by 2 per hour. The restaurant owner wants the buffet to maintain a minimum revenue of $120 per hour.

Would the best representation of this scenario be an equation or an inequality?