Answer:
Following are the solution to the given question:
Step-by-step explanation:
Let
when i is the element itself is allocated to 'j' 
Min

Subject to:

Answer:
4th option
Step-by-step explanation:
open circle means more than or less than
n is more than -3 but less than 1
The answer is 54x so yeah
Answer:
$870 in his bank account
Step-by-step explanation:
420 / 3 = 140
140 * 6 = 840
840 + 30 = 870