A system of equations is created by using the line represented by 2 x + 4 y = 0 and the line represented by the data in the table below. x
y
–1
8
3
–4
5
–10
6
–13

What is the x-value of the solution to the system?

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?