3(6 - 8)2 + 8÷2

note: the 2 after the parenthesized -8 is an exponent.

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?

Use sigma notation to represent the following series for 9 terms.

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?