First of all we know he is at the 12th round, so 11 rounds of 3 minutes passed, so 11 x 3= 33 minutes passed, but we also know that he passed two minutes of the 12th round so 33+2= 35 minutes. The player played for 35 minutes.
Relations are ordered pair sets (x,y) mapping a value to another value the set of 1st components is called the domain the set of 2nd components is called the range
