Six more than twice the number is nine

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

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?

Describe the graph of 3x+2> 2 and 3x< 6