Which graph best represents y= -x^2*6x-1

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

Factor the polynomial. b^2 + 4b + 4