Awedding planner needs to determine how many appetizers to order for between 300 and 330 guest . should she use exact answer, approximate, or an estimate

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

What percent of the circle below is shaded?