Do you mean 3^4?
If you mean this^ the answer would be 81.
344 pairs of athelic shoes were sold bc when f=688 double 344 bc its individual shoes
if u set up the equation f÷2 - 4 = 340 and u input f u get the answer.....hope this helped
0.08 / 0.5216
Answer: 0.15337423312