In a particular city, taxicabs charge passengers $3.80 for entering a cab and then $0.40 for each 6.2 one-fifth of a mile (or fraction thereof) traveled. If x represents the distance traveled in miles, then C(x) 5.8- is the cost of the taxi fare, where C(x) = $3.80 if 5.4- x =0, C(x) = $4.20 if 0