The library needs at least 15 people to sign up for an event in order to run it. Currently, 3 people have signed up, and the library expects 2 more people to sing up each day. After how many days will the library be sure it can run the event? Write an inequality that could be used to solve this problem. (1 point)
Let x represent the number of days. Since the library expects 2 more people to sign up each day, the number of people that will sign up after x days can be represented as 2x. The total number of people signed up after x days will be 3 (current number of people signed up) + 2x (number of people signing up each day). In order for the library to run the event, the total number of people signed up must be greater than or equal to 15. Therefore, the inequality that could be used to solve this problem is 3 + 2x ≥ 15.
