We have to find the revenue when 12 units are sold (x = 12).
We can calculate the revenue by replacing x with 12 and calculate:
[tex]\begin{gathered} R(x)=x\cdot p(x) \\ R(12)=12\cdot p(12) \\ R(12)=12\cdot34(3)^{\frac{-12}{4}} \\ R(12)=12\cdot34\cdot3^{-3} \\ R(12)=\frac{12\cdot34}{27} \\ R(12)\approx15.11 \end{gathered}[/tex]
Answer: the revenue for 12 units is $15.11 approximately.
