WHO EVER ANSWERS THIS WILL BE BRAINLIEST! ANYONE WHO ANSWERS IT SHOW ME ON NUMBER LINE.

The equation respenting the left table is

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

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?