Answer:
Px =75x^3-5x^5/2
Step-by-step explanation:
The total revenue generated by the firm is:
The average cost per TV is:
Where x is the number of televisions sold and P is the firm's income for all the televisions sold
In this problem we know the equation r(x).
Then P(x) will be:
Therefore if then
its a combination problem, so in your calculator put 9 nCr 4 and you'll get 126. i hope this helps. :)
The answer is X= -25