Simplify (4x2+ 12x - 9) + (7x2- x + 3)

11x2+ 12x - 6
11x2+ 13x + 6
11x2+ 11x + 6
11x2+ 11x - 6

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?

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Me. i can't figure out this question. give an explanation too. .