Ordered pairs in which of these formats would always represent a function, assuming that the cost of fruit stays the same? (number of oranges bought, total cost of groceries)
(number of apples bought, total cost of apples)
(number of apples bought, number of oranges bought)
(total cost of apples, total cost of groceries)

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?