For a certain type of sand, one cubic foot weighs 80 pounds. This sand goes into a container that weighs 40 pounds. Use the Rey tool to make a graph that shows the total weight of the container and sand, W, filled with N cubic feet of this sand 

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?