What is the better deal for $56 over 25 or 32.05 over 15

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?

Through non-collinear points there is exactly one plane.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?