When solving the system of equations below, what is the appropriate substitution?
y = 10x + 1
y = 2x – 5
2x - 5 = 10x + 1
O y = 10(2x - 5) + 1
O y = 2(10x + 1)-5

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?