MATH TRIVIA TIME: 1.) What is 3 x 2 -1?
2.) If x = 2, then what is 8 - x?
3.) What is 2 x (3 + 5)?
4.) If w = 10, then what is 15 - 10 + w?
5.) 500/1000 = 5/?

The person with the most correct answers gets brainiest.

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

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?