Which of the following rates converts to a unit rate of 65 miles per hour, 845 miles per 13 hours, 952 miles per 14 hours, 693 miles per 11 hours, 625 miles per 10 hours

This is pretty simple! Just divide each of the options and whichever has the answer of 65 is the right one.
845/13 = 65
952/14 = 68
693/11 = 63
625/10 = 62.5
Your answer is 845 miles per 13 hours converts to 65 miles per hour

Polar coordinates is 8,9

That they are numbers and related to each other.