Volume is 4/3(3.14)(r)^2
the radius is 5.2 ft
F-1(x) = x\5 + 6/5
hope this helps
I suppose you mean

Recall that for
, we have

Then

which is valid for
, or more simply
.
Finally,

For the first one take the amount the pitcher can hold and multiply it by the amount of pitchers he makes
14.5 x 8 = 116 oz
For the second one take the amount made per oz and multiply it by the amount of oz he made
0.25 x 116 = $29