why is the standard deviation of means generally smaller than the standard deviation of the opopulation of individuals

Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

How do you determine if an ordered pair is a solution to a given equation?