are there any answer choices
Answer: It was established in January 2017, Birmingham Civil Rights National Monument honors the nonviolent protestors that fought against the county's racial discrimination law and practices.
Explanation: Hope that helps :)
I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
Answer: 22.5
Explanation: Trust me or get it wrong