Abox of cereal costs 4.69.the package label says that the box contains 19 servings. what is the cost of 1 serving to the nearest cent

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

Which of the following is true for the relation f(x)=2x^2+1

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?