Simplify6 1/4 to the power of four

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

41/17 as a decimal rounded to the nearest hundredth

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?