Which value for r in the table would most likely indicate an association between the conditional variables

How do you answer this question? (step by step)

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

What expression is equivalent to log3(x+4)