In one week a satellite orbiting the earth travels 1.82 x 10 to the 9 power (meters). which of the following is the best way to rewrite this quantity using more appropriate units?

Write 17/20 as a decimal and as a percent.

Find the difference (8ab+a+2) - (3ab+6)

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?