Kevin identifies expressions that are equivalent to 8b + 8. Which of the following does Kevin not identify as equivalent? Answers:

4(2b) + 4(2)

6 + 4b +2b + 2 + b + b

(b + 8)8

2(4b + 4)

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?