A special filter can process 3/4 gallon of liquid in 25 minutes. If the filter processes a liquid at a constant rate, what is the rate in gallons per hour that the filter process the liquid?

Give me the equations of two lines that have the same slope but are not parallel.

Is the figure congruent? yes or no?

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?