Write the word sentence as an equations. YOU DO NOT NEED
TO SOLVE.
5 less than a number bis 16.

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

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?