The number of customers visiting a local movie theater since the year 2000
can be modeled by the expression
-3x2 - 27x + 825, where x is the
number of years since 2000. What
is the quotient if you divide the
expression by -3?
A x2 - 9x + 275
B x2 + 9x - 275
C x2 - 9x - 275
D-X2 - 9x + 275

Find the solution of each of the following.

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?

This is about circle theorems. someone asap : (