A. y = x -3|- 4
B. y = ]x +3[ - 4
c. y = x +3[+ 4
D. y - x - 3[+ 4

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?

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.