Dominic, ralf and peter have just eaten a huge christmas meal. dominic now weighs half as much as ralf, and peter weighs three times as much as dominic. together they weigh 720 pounds. how much does dominic weigh?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

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.

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.