Answer:
14
Step-by-step explanation:
Given
Here we are asked to find the maximum value of C
C is a sum of factors of x and y
As both the co-efficients of x and y are positive, we have to select the maximum values of both in their given ranges
(if any of their co-efficients was negative, the term whose co-efficient is negative is to be substituted with its least value in its range to get maximum value of C)
Therefore Maximum value of x=-2 and y=6
therefore C
[tex]= 5\times -2 + 4\times 6\\= -10 + 24\\= 14[/tex]
Therefore maximum value of C=14
