Which equation shows how the properties of numbers extend to negative whole numbers by the commutative property of addition? a) −2 + 4 = 4 + (−2) b) −2(4) = 4(−2) c) (−2 + 4) + 3 = −2 + (4 + 3) d) −2(4 + 3) = (−2 x 4) + (−2 x 3)

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.