I'm sorry but it is impossible to answer the question you have asked for the lack of information. We could fix this issue if you display a picture of the equation!
7 weight exactly the same, therefore the 8th golf ball doesnt weigh the same as the 7. so the 8th ball is slightly lighter
I think its 11 for its absolute value
3/2? I’m not much of a math person so I don’t know for sure !!
The answer is 24. To get to each term, we can see that the value is decreasing by 7. So 31 - 7 = 24
