Determine the type of sampling method being used and whether the method is biased and explain: A phone company wants to get customer feedback to share with their advertising. They randomly call customers who live next to cell towers and ask them how reliable their service is.
PLEASE SHOW WORK OR EXPLAIN!!​

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Which one is the correct answer, and why?

On this question. a hypothermia occurs when a person's body temperature drops below 95 degrees fahrenheit. write and solve an inequality that describes how much lower the body temperature of a person with hypothermia will be than the body temperature of a person with a normal temperature of 98.6 degrees fahrenheit