from the question, we were told the following:
That the rental fee at a video is $5 and there is an addition of 1$ for everyday late.
We are to represent the above statement as a linear function.
Let make the rental fee be x
So for a charge of $5:
is = 5x
since there is an addition of $1 every day for lateness, we will have:
= 5x + 1
Therefore the function will be:
f(x) = 5x + 1
So the correct option is the third option which is f(x) = 5x + 1