Water the bejeezes out of the grass and it will come back fine. Don’t friggin scalp it again, they are less able to handle tough times like drough if you do that. Follow Scotts fertilizer recommendations. Anything other than Scott’s is a waste of money. Weedeaters? they are pretty much all the same, get a cheap one, it hardly matters. You are more likely to have someone run it over than have it die on you.
I see your friend arrived right after you.
Yeah, I know what you mean. My weedeater I have now is a $99 Walmart and it died only because I forgot to mix in the 2cycle.