Carmen ran 2 laps around the track in 6 minutes. What are the unit rates in laps per minute and minutes per lap?

6/2 = 3 (minutes per lap)

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)