Which of the following best describes the us government? a. executive rule b. direct democracy c. dictatorship d. representative democracy

Correct answer is D) representative democracy. 

In the United States, the people do not govern directly. We as citizens do not vote on every issue to make government decisions, so the US is not a direct democracy. Instead, we elect representatives who make a full-time job out of governing, making us a representative democracy. 

By completing the square. Using the formula (b/2)^2. The answer is 2(x+3)^2-21