F(x) is most likely the f(f(x)x) where f(x) is g(x))f)) and composition can be 69 + 46 which is the total of 137
Well, the first 16 were about 16*75=$1200 extra. The last 8 were $720 lost. Thus, the total profit is $480. He bought them with $7200, which means the profit is around 6.67%.
Sketitttttttttttttt sorry lol
The radius is one-half the diamteter, that is
![r=\frac{1}{2}d](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B1%7D%7B2%7Dd)
where r is the radius and d the diameter. Therefore, the ratio of the radius to the diameter is