admission is 7 (no matter how many rides)
Now,
it tells us each ride is 3.50 and he does 6 rides, so:
3.50 * 6 = $21
So, that's a total of 7 + 21 = $28
The correct answer is C
Note, in functional notation that would be:
f (6) because he takes 6 rides, and that's the independent variable,
the rest, calculation is 7 + 3.6(6)
Look at the choices, it is C.
