Answer:
![\huge\boxed{x\in[-0.5,\ 1.5]}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7Bx%5Cin%5B-0.5%2C%5C%201.5%5D%7D)
Step-by-step explanation:

Jack left 16.66% of gratuity for the waiter.
Step-by-step explanation:
Given:
Restaurant bill amount = 52.00
Total bill jack paid = 62.40
To find:
percent of gratuity Jack left for the waiter = ?
Solution:
Lets first find the amount jack gave has gratuity to the waiter
The amount given for gratuity = 62.40 - 52.00
The amount given for gratuity = 10.40
Now the percentage is
=
= 
= 16.66 %
- 1/3, - 0.2 , 0.4, 1.3, 5/3
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Step-by-step explanation: