Colby's gross income was $93,000 last year. If he had $1646.92 withheld for federal income tax from each of his monthly paychecks, what percentage of his gross income was withheld for federal income tax last year? Give your answer to the nearest hundredth of a percent

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?

What is x and y intercepts for y=x+7

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?