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The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

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.