What is the simplified form of (2x^2 4x - 3) (3x 1)? a) 6x^3 10x^2 - 5x 3 b) 6x^3 14x 5x - 3 c) 6x^3 14x^2 - 5x - 3 d) 6x^3 - 10x^2 - 5x - 3

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?