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 sign 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
Let "d" represent the number of days that have passed.
Since the library expects 2 more people to sign up each day after the initial 3 people have signed up, the number of people who will sign up each day can be expressed as 2d.
To determine the total number of people who will sign up after "d" days, the formula is 3 + 2d.
To ensure that at least 15 people sign up, the inequality is:
3 + 2d ≥ 15