Mary sent out invitations to her wedding last week. the invitations were heavy, so put more than just one stamp on each envelope. she use 255 stamps and mailed out 85 invitations. if she used an equal amount of stamps on each envelope, how many stamps did she place on each envelope?

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi