ANSWER:
4th option: For every hour the electrician works, her pay will increase $24.
Explanation:
We have that the payment of an electrician is given by the following function:
In the function, we have a fixed charge of $125 and a variable that is per hour, each hour he receives a fixed amount that would be the slope, that is, for each hour he is paid $24.
Therefore the correct answer is the 4th option: For every hour the electrician works, her pay will increase $24.