Each baseball team has nine players and each football team has eleven players. five schools have both baseball and football teams. three schools have only a baseball team. how many players are there for all eight schools?

An animal shelter has 21 puppies. if the puppies are 28% of the total dog and cat population , how many dogs and cats are in the animal shelter

Which graph represents the function g(x) = |x + 4| + 2?

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?