Can someone please help and if you’re correct i’ll give brainliest

What could explain what happened when the time was equal to 120 minutes

If m 17 27 90 63 ** picture is attached

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is