Answer:
ouuuuu that is a really good question
C = 150000 + 17n
where,
C = Total Cost per year = Fixed Cost + Variable Cost
n = Number of Widgets produced each year
17n = Variable Cost
150000 = Fixed Cost
No because the square root of 128 is 11.3 which it not a whole number or in other words doesnt come out evenly
E = 3(6^2)
E = 3(36)
And your answer is E = 108 :)