Answer:
Option b (4,1)
Step-by-step explanation:
The region given by the system of inequalities is shown in the graph. We must look within this region for the point that minimizes the objective function 
The minimum points are found in the lower vertices of the region.
These vertices are found by equating the equations of the lines::

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The lower vertices are:
(4, 1) (2, 4)
Now we substitute both points in the objective function to see which of them we get the lowest value of 

Then the value that minimizes f(x, y) is (4,1).
Option b
He can invite all his friends to the park or somewhere and meet them all at once
The total space the water dispenser will take is equal to their volume.
Volume of one water dispenser = Length x Width x Height
So,
Volume = 4 x 8 x 14 = 448 in³
This is the volume on 1 dispenser. The volume of 3 dispensers will be = 3 x 448 = 1344 in³
This means, the 3 water dispensers will take 1344 cubic inches of space in Sid's refrigerator. So the correct answer is Fourth option
Answer:
600 centilitres
Step-by-step explanation:
1 litter = 100 centiliters
Answer:
880
Step-by-step explanation: