I would like to verify that this word problem was translated into a function correctly.

A towing company charges a flat rate of $100.97$ dollars per day plus $0.81$ dollars per mile.

I think the function can be represented as follows if $y$ is cost and $x$ is miles: $$ y=100.97+(0.81)x $$

The average rate of change in dollars per mile is $0.81$. Is this right?


1 Answer 1


You are correct, so long as you are using the towing company for a single day. Very nice. :)

  • $\begingroup$ This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post. - From Review $\endgroup$
    – Stefan4024
    Jul 30, 2018 at 22:04
  • $\begingroup$ @Stefan4024 Yes it does? The question is "is this correct?", and it is. Furthermore, without an answer like this, this post stagnates on the Unanswered Questions Queue. $\endgroup$ Jul 30, 2018 at 22:17
  • 1
    $\begingroup$ @Stefan4024 See this Meta post and this one for why I asked Mike to post his comment as an answer. $\endgroup$ Jul 30, 2018 at 22:21

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