If (x + 1)(x - 3) = 12, then which of the following statements is true? x+1=0 or X-3=0
X +1 = 12 or X - 3 = 12
OX-5 = 0 or x + 3 = 0

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

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?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?