What does reportage mean and how do you use it in journalism?

A mean is an average. You add all numbers together and divide by the number of numbers. Otherwise it could be the other kind of Mean eg, you are mean to other people on the street/school.

you can use it when you want something done soon and that you want to be surely done no matter what it takes.

It's just another way of saying "be useful". When you are in the woods a map and compass would be of use. They would be useful.

Associated Press

it means you only take what can be replaced so that whats left for your children is still the same forest.