#1 need help asap plz

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?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Use sigma notation to represent the following series for 9 terms.