Atriangle has vertices at a (2,4) b (4,3) c (5,7) which transformation would produce an image with vertices a' (-2,-4) b' (4,-3) c' (-5,-7) does this reflect over y axis or x axis or rotate 180 or 90 degrees

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?