Can anyone help me out please I need it done FAST ILL GIVE A LOT OF POINTS PLUS BRIAN LIST

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Roderick wants to draw a circle for which the numerical value of the circumference is greater than the value of the area.which lengths could he use for the radius? check all that apply

Six random samples were taken each year for three years. the table shows the inferred population for each type of fish for each year.