What fraction will make this equation true?

35×□=95

im confused...

Is this a polynomial function? i need to know asap

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?

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi