Sum of the ages of a father and the son is 40 years. If father's age is 3 times that of his son, then father's age is * 2 points 35 40 30 45

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.