Find the composite function (please help) :)

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Three times the sum of a number and seven is negative thirty-six. what is the number?

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