The function gives the estimated cost , in dollars, of a taxi ride covering a distance of miles, where . Which statement is the best interpretation of in this context?
A taxi ride of $15.50 covers 5 miles.
A 5-mile taxi ride costs $15.50.
The cost increases by $5 for every 15.5 miles traveled.
The cost increases by $15.50 for every 5 miles traveled.
