An online fax company, efaxit.com, has a customer plan where a subscriber pays a monthly subscription fee of $10.25 dollars and can send/receive 140 fax pages at no additional cost. for each page sent or received past the 140 page limit, the customer must pay an overage fee of $0.19 per page. the following expression gives the total cost, in dollars, to send p pages beyond the plan's monthly limit.
