The difference of a number and 20 is equal to the product of the same number and 6 increased by 15.

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

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?

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex