Given that abc=def what is the measure of d

What is the solution to the inequality

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?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?