A store that originally sells laptops for $600 is putting them on sale for 30% off. What is the sale price of the laptop? help please

Which graph represents the equation y =4x

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.

I’m confused on how to work the pie charts