Let y be the cost per week of the rent for the oversized car, since there is a cost of $0.60 per mile driven, we can write
where x represents the miles driven and $535 is the weekly fee form the given table.
Now, we need the cost per week when x=100 miles. Then, by substituting this values into our function, we have
which gives
Hence, after 100 miles, she will pay $595 in one week.