Answer:
The scale factor is 3
Step-by-step explanation:
The reason is that 12, 15, and 9 equal 4, 3, and 5 if divided by 3
I think the answer would be 1/2
804 miles/12 hours = 67 miles
Which means that Ivan drove 67 miles per hour
67 miles*9 hours = 603 miles
Which means that in 9 hours Ivan can drive 603 miles if he drives at a constant speed of 67 miles per hour.
