The variable z is directly proportional to x. when x is 6, has the value of 72. what is the value of z when x = 13

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

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?

What is the volume of this container?