If the product of 2 identical numbers is 324,find one of the number

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

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?