A groundhog crawls out from a hole 3 feet below the surface of the ground. Joan wrote −3 feet to represent the depth from which the groundhog crawls out. What does 0 represent in this situation? the surface of the ground
the distance the groundhog crawled
the height above the surface of the ground
the level from which the groundhog crawled out

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

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?

Which expression is equal to (f+g)(x)?