Determining the range from a set of ordered pairs
the set of ordered pairs (-1,8), (0, 3), (1, -2), and (2-7) represent a function. what is the range of the function?
{x x = -1,0, 1, 2}
{y: y=-7, -2,3,8}
{x: x=-7, -2, -1, 0, 1, 2, 3, 8}
{y: y = -7, -2, -1,0, 1, 2, 3, 8}
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done

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 ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.