Find the multiplicative inverse of -2/15

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Which value would be a solution for x in the inequality 47-4x< 7