The cost of a taxi ride can be modeled by the function , where is the total cost in dollars and is the distance traveled in miles. Which statement best describes the meaning of the -intercept of the graph of in the -plane?
The taxi costs $2.50 per mile.
The taxi ride costs $5.00 for every mile traveled.
The initial fee for a taxi ride is $5.00.
The taxi travels 5 miles for free.