On the middle school baseball team, 8 players are sixth graders. Of the players, 40% are sixth graders. How many players are on the team? Explain your answer.

What is the volume of the sphere shown below with a radius of 3?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

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?