Fwd: option 1: $35 per month and $100 membership fee.
option 2: $25 per month and $150 membership fee.
michael is trying to determine which tennis club to join. if michael chooses option 2, for which month will his total cost for option 2 be less than his total cost for option 1?

35m + 100 = 25m + 150
35m = 25m + 150 - 100
35m = 25m + 50
35m - 25m = 50
10m = 50
m = 50/10
m = 5

Month 5

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.