Yesterday the temperature at noon was 27°F. By midnight, it had gone down by 29.9°F. What was the temperature at midnight? HELP HELP HELP

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 matrix multiplication is possible?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)