URGENT PLS HELP 200 cross-country runners were surveyed about how many hours they spend per week training. The mean was 12 hours per week and there was a standard deviation of 2 hours per week. How many cross-country runners spend between 10 and 16 hours a week in training?

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.