The answer the only method for finding the answer is computing directly the value of O(20) by replacing n by 20, since we know that <span>O(n) = 2n - 1 so, we get </span>O(20) = 2*20 - 1 = 40-1=39 the answer is <span>D. 19</span>
The perimeter of any shape is just what you get when you add up all of the side lengths. We know that one side is 462 meters, and since a square has four equal sides, we can just mulitply 462 × 4 to get our perimeter, 1,848 meters.
