Final answer:
The cost of producing 1000 bagels is $549.30.
Step-by-step explanation:
To find the cost of producing 1000 bagels, we can substitute x = 1000 into the cost function C(x).
C(x) = 300 + 0.25x - 0.7(x/1000)^3
C(1000) = 300 + 0.25(1000) - 0.7(1000/1000)^3
C(1000) = 300 + 250 - 0.7(1)^3
C(1000) = 300 + 250 - 0.7
C(1000) = 550 - 0.7
C(1000) = 549.3
Therefore, the cost of producing 1000 bagels is $549.30.