3. Find the values of x and y, given this diagram. 5yº
(2x + 1)
45°
D
O AI = 22, y = 9
O B.2 = 22, y = 27
OC.2= 23 y = 9
OD.2 = 23 y = 27

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?