Which of the following rewrites shows the correct process for completing the square? (1 point) 4x2 + 12x + 7 = 0 rewritten as x2 + 3x +
9
4
=
7 9
+
4 4
422 + 9x + 5 = 0 rewritten as 4x2 + 9x +
81
4
5
II
+
81
4
2.x2 8x - 9 = 0 rewritten as 2x2
8x + 16 = 9 + 16
O 3.x2 - 6x - 4 = 0 rewritten as 22 - 2x + 1 = 4 + 1

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?