Chris and Jen decide to go apple picking at a local apple orchard. As the number of apples they pick increases the cost

of the apples also increases. The function $f$ relates the varying cost of Chris and Jen's apples, $c,$ in terms of the

varying number of pounds of apples that Chris and Jen pick, $n,$ where $c=f(n)$ and $f$ is defined by

$f(n)=0\mathrm{.}35n+8.$

Which of the following describes the meaning of $f^{-1}(24)?$

The cost of each apple when $24$ apples have been picked

The cost of $24$ pounds of apples

The number of pounds of apples Chris and Jen picked when the total cost is $24$ dollars

Not enough information

None of the above

Evaluate $f^{-1}(24)$

$f^{-1}(24)=$

Determine the rule for the function $f^{-1}.$