R = 3
6x3=18
18x3=54
54x3=162 ...
I think it's the answer C, because in the second and third pairs, the -2 are the same.
Let m represent the number of miles this guy runs in a day.
He runs every day, so the minimum number of miles has to be greater than 0.
According to the problem statement, the max number of miles is 3.5 miles or less.
Translate this into a (symbolic) inequality.