Solve: -6n +5 < 11 Which graph shows the solutions? +0-F -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 - K0++ -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 EHO- H> -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 AH oH -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 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?