With what number? With all? And why 5. It’s small for this difficult task.
Given:
Fixed cost = b = $ 42,500
Production cost (Variable cost) /unit = m = $ 6/ unit
Let 'x' represent the number of unit, therefore the variable cost will be

a) The cost function will be the sum of the fixed cost and the variable cost.

b) The revenue function is the amount the product is sold per unit.
Recall: 'x' represents the number of units.
Therefore,

Hence, the revenue function R(x) is

c) The profit function is the difference between the revenue function and the cost function.

Hence, the profit function is

d) Let us compute the profit (loss) values when the units are 6000 and 11000
Using the profit function

Therefore,

Hence,
Answer:
Bruce needs to sell 267 widgets each month to make a profit.
Step-by-step explanation:
From the information given, you can write that the cost of the monthly rent plus the cost in labor and materials to make each widget for the number of widgets is equal to the amount of sales:
10x +4000 = 25x
Now, you can solve for x:
4000 =25x-10x
4000=15x
x= 266.67→267
According to this, the answer is that Bruce needs to sell 267 widgets each month to make a profit.