Good lord. You need some sleep. Lol. Do what that one guy said. Get the app for your phone. Or call the mulch place and give them your numbers. The longer you do this it gets simple. I can now just look at a bed and know what I need. Looks to me you have a lot of weeds to pull there. Spray it first if you have a chemical license to kill the weeds. Then pull them and add the preen or such. I add my pre merge to to top of the mulch to get what weeds are in the mulch as well. Some do under much. But that will not stop what's above the pre merge. I look at a 10x10 bed and just know that to top dress at 1" it will be a yard . The deeper you need just add that. Good luck.
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