What are theses weeds?
The first weed looks like hairy bittercress that has already gone to seed. The weed in the middle photo is chickweed (probably mouse-ear or hairy chickweed). Both of these are early season weeds past their prime. The third photo shows a very healthy lawn which is the best defense against weeds. There is no need to use an herbicide on these weeds now. Herbicides do not work on mature weeds.