The average weight of dogs of a certain breed is 122 lbs. with a standard deviation of 15 lbs. The distribution of weights of dogs of this breed is approximately normal.

What does a random dog need to weigh to be considered to be in the top 5% for weight,

for dogs of this breed?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103