Answer:
Option C. is the answer.
Explanation:
Function that represents the material cost is M(s) = 225 + 0.65s
and function representing the labor cost is L(s) = 54 + 1.15s
We have to find the expression for manufacturing cost.
Since Manufacturing cost = Labor cost + Material cost
= M(s) + L(s)
Now by replacing the values of M(s) and L(s)
Manufacturing cost = (225 + 0.65s) + (54 + 1.15s)
= (225 + 54) + (0.65s + 1.15s)
= 279 + 1.80s
Now manufacturing cost of one scissors =

Here manufacturing cost is = 279 + 1.80s
and Number of scissors manufactured = s
So Manufacturing cost per scissors =

Therefore, Option C is the answer.