Solve the system of linear equations by substitution. 9. 2x+3y=25 and 4x-y=15

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?