A sample of a radioactive substance decayed 43% over the course of 6 weeks. How many grams were in the sample originally if 23.37 grams of the substance were remaining after the 6 weeks?
Do not include units in your answer.

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean