Determine if the given equations are functions or not functions.

Functions
Not Functions
x=3
x2 + y2 = 81
y=-x+11
y2 = -5x - 12
y = 2x2 - 6x +4
y=-7

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 equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?