If a+3b = 7, 3b+2c = 9 and c+d = 1. How much is 2a + 15b + 10 c + 4d = ?

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

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?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}