two car rental companies are running special this month at driveway rentals customers can pay to $30 rental free for a sedan and 15 for each day rental y = 15x + 30 at Harry's rental a car customer can pay a 40 rental free for a studding and $10 for each day of rental the cost for the two car rentals are shown on the graph below how many days must a car be pretend for the cost of both car rentals to be the same A4 B6 C2 D8