Solve the following equation for b. A=18b

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?

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)