Agroup of workers can plant 5 1/4 acres in 4 1/2 days. what is the unit rate in acres per day?
write your answer as a fraction or a mixed number in simplest form.

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. !

Answer this question! 30 points and brainliest! only if you know the answer.

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.