Answer:
12.1
Step-by-step explanation:
The formula of the length of the segment AB:

We have:

Substitute:

Answer:
B) 10.
Put in a equality
20 > (70/x)
then you solve
20x > 70
x>70/20
x> 3.5 you can not put part of a chair in a row so you round up
****You can put 4 or more chairs in a row****
Nikkis charges are 20,40,50,80. Dave’s charges are 25 and 37.5.