It would be something like this:
20+6x>100
Where X is the number of weeks passed.
$6.98 is answer but the answer that is rounded is $7.00
Answer:

Step-by-step explanation:
By FOIL method, 
Answer:
Step-by-step explanation:
<u>The filling speed is 30 hours or:</u>
<u>The draining speed is 34 hours or: </u>
<u>If both lines are open simultaneously, the filling speed is:</u>
- 1/30 - 1/34 =
- 17/510 - 15/ 510 =
- 2/510 =
- 1/255 in an hour
<u>If the tank is 1/5 full, then we need to fill the 4/5 of level and it will take:</u>
- 4/5 : 1/255 =
- 4/5 *255 =
- 204 hours
Answer:
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Step-by-step explanation:
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