John has two open packs of paper. one pack has 31 pieces of paper. the second pack has 45 pieces of paper. how many pieces of paper does john have all together? a) 72 b) 73 c) 74 d) 76

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Nikolas calculated the volume of the prism. his work is shown below.

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.