The questions ask you to caculate how many elements must a set of numbers of proper subsets of the set 1/2 of the total number of subsets per a subset,base on the question I bet the answer is 1 I hope this helps let me know if u passed and I will try to work it out again GREAT LUCK!!
Answer:
I am not trying to be funny but you blow on them or if you have magical powers just move them with your eyes (the secound I was trying to be funny)
Step-by-step explanation:
I think the answer is C, but I don't even understand you're question is. do you want to know the mph they were going? if so then your answer is C