Please help with a-c . Also please put the equations used for each .

Long problem 1 (16 points) Show all work, clearly indicate answer, and use correct units for full credit. Look at the configuration of charges below. Q1=9.00MC Q2= 4.00XC Q3= -6.00MC 1=0.0700m 12= 0.0250m a) What is the net electric field (magnitude and direction) at point P b) What is the electric potential at point P? c) If an electron was placed at point p, what would be the net force (magnitude and direction) that the electron would feel