3,255 items are made every 3 hours. 4,500 items are made every 4 hours. 5,625 items are made every 5 hours. 6,725 items are made every 6 hours.

Answer 1

3225/3 = 1075 made on average each of the 1st 3 hours

4500-3225 = 1275 made in the 4th hour

5625-4500 = 1125 made in the 5th hour

6725-5625 = 1100 made in the 6th hour

they start out slower, maybe getting used to the routine,

then they speed up that 4th hour

but slow down a little the 5th hour, almost as slow as when they started in the 1st 3 hours

and they slowed down a little more in the last hour

IF the 2nd and 3rd hours were symmetrical to the 5th and 6th hours with the 4th hour the peak speed

then in the 3rd hour, they made 1125, and the 2nd hour they made 1100

that means the 1st hour they made 3225-1125-1100 = 1,000

You could model this as a downward opening parabola shaped curve with vertex= maximum point = (4, 1275) where (x,y) has x for the hour and y for the output in that hour