$4500 principal, 9% rate, 3.5 years. find the simple interest

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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?