The functions f(x) and g(x) are described using the following equation and table: f(x) = −2(1.07)x xg(x) −4−10 −2−7 0−4 21 Which equation best compares the y-intercepts of f(x) and g(x)?

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?