What is the answer for question b)

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.

Through non-collinear points there is exactly one plane.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup