The function y = 5.25 +1.75(x - 1) can be used to determine the cost in dollars for a taxi
 ride of x miles. What is the rate of change of the cost in dollars with respect to the
 number of miles?
 F $7.00 per mile
 G $5.25 per mile
 H $1.75 per mile
 J $0.75 per mile