What is the domain of the function on the graph? LO
O all real numbers
4
3
O all real numbers greater than or equal to -2
O all real numbers greater than or equal to -5
O all real numbers greater than or equal to 0
2
1
-54-3-2-117
2
3
4 5
х
-2
-3
-6

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?