The cost, in dollars, of a taxi ride is given by the function , where , and is the distance traveled in miles. Which of the following is the best interpretation of in this context?
A 10-mile taxi ride costs $28.
A 28-mile taxi ride costs $10.
The taxi travels at 10 miles per hour for 28 minutes.
The taxi's initial fee is $10 and it costs $28 per mile.
