An artist is drawing up plans for a mural. She wants to include a rectangle in her design. a. What is an equation of line D that will make the figure a​ rectangle? b. Explain how the artist can use algebra to confirm that the figure is a rectangle.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.