Match each whole number with a rational, exponential expression. 1.
169
2.
100
3.
49
4.
36
5.
81
6.
441

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?

Are the corresponding angles congruent? explain why or why not.

Solve the system of equations. y=3x-1 and y=-2x+9. show work