During his winter vacation, George reunited skis and boots for 5 days from the slope slayer ski shop. The shop charges the same rate for each day of a rental. Including a $7.50 application fee, George paid a total of $177.25 to rent skis and boots.
 What is the rate of change, in dollars per day, for the function that represents George’s rental cost. 
 A. 7.50 
 B. 33.95
 C. 35.45
 D. 42.95