The sum of Dina's and Cora's ages is 30. Three years ago, Cora was three times as old as Dina. What are their present ages?​

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12