Which answer choice describes the transformation of the quadratic function y = -4x2 from the parent function y = x2? A. A vertical stretch by a scale factor of four with a reflection about the x-axis and a horizontal shift to the left one unit
B. A vertical stretch by a scale factor of four and a reflection about the x-axis
C. A vertical shift down four units
D. A vertical reflection about the x-axis, and a vertical compression by a scale factor of four

Answer this question only if you know the answer! 30 points and

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.