List 2 comm on factors of 36 and 48

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

Ineed with number 17 i don’t get it at alll

Three coins are flipped. what is the probability that there will be at least two tails?