Compute the flux of the vector field f = 5xi+5yj through the surface s, which is the part of the surface z = 36 − (x2 + y2) above the disk of radius 5 centered at the origin, oriented upward.

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.