How many piles the plates are stacked in I think
All you wanna do is divide-
490/3 1/2= 140
they make 140 buttons per hour
The inequality that represents the domain of the function is 
<h3>How to determine the domain?</h3>
The function is given as:

Set the radicand greater than or equal to 0

Multiply through by 2
x - 20 ≥ 0
Add 20 to both sides
x ≥ 20
Hence, the domain of the function is x ≥ 20
Read more about domain at:
brainly.com/question/1770447
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Answer:
8 ft
Step-by-step explanation:
t = a + b/2 times 2
2 + 6 = 8
8/2 = 4
4 x 2 = 8
1. y<span> ≤ 4x/3+5
2. y</span><span>< 6x/4+3</span>