Depends on the exercise. The ones that say work up to a 3-5rpm means all of the "warmup sets" are considered work sets, since you only do 1 true work set (the work set is where you find your 3rpm-5rpm).

An example would be

Squat

45 lbs x5
95 lbs x5
135 lbs x5
185 lbs x5
205 lbs x5
225 lbs x5 (5 rpm)

One other ones that have a specific number of sets, you don't count the warmup sets.

An example would be

Bench Press

45 lbs x6
95 lbs x6
135 lbs x12
135 lbs x12
135 lbs x12
135 lbs x12


You only need to do warmup sets before the first repetition exercise. As long as it's challenging, the weight you use on non-max effort exercises is not that important with this program, as long as you are increasing weight every 1-2 weeks.

"You’ll notice that I don’t list the number of warm-up sets for your main lift on Max-Effort days or Repetition Upper Body days. Instead, I use the term “work up.” This is because the number of warm-up sets you’ll be performing is determined by how strong you are! The stronger you are, the more sets you’ll need to reach your max weight. I favor multiple sets of low reps for warming up on Max-Effort Day and just 1 or 2 sets of 6-8 reps before your first exercise on Rep Upper Body Day.

Before you warm up with weights, however, you should be performing a 5-15 minute general warm-up. Make sure you have a light sweat going before getting under the bar."

Straight from the article.

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Is the warmup for barbell bench press enough for all the following exercises, warms up the biceps, forearm, lower back, middle back, traps and whatever upperbody part except abs?

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