Answer:
136 units
65x - 8840
Explanation:
Given,
The production cost function is,

Revenue function,

So, profit would be,
P(x) = Revenue - cost
= 260x - 195x - 8840
= 65x - 8840
In break even condition,
Profit, P(x) = 0
65x - 8840 = 0
65x = 8840
⇒ x = 136.
Hence, the break even quantity is 136 units.