Rob's Refrigerator Repair uses the equation y = 39.50x + 75 to calculate the total charge, y, in dollars, for x hours of work. What is the
meaning of the slope of the equation?
O A The charge for each hour is $75.00.
B. The base fee for service is $75.00
OC. The base fee for service is $39.50.
D. The charge for each hour is $39.50.