Jose has $20 to spend on bowling. the bowling alley charges $2.25 per game and $5 to rent a pair of bowling shoes. if jose needs to rent bowling shoes, what is the greatest number of games he can afford with the money he has?

What is the difference between the predicted value and the actual value

How can you tell when x and y are not directly proportional?

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?