Oswaldo earns a salary of $1,500 per month plus an 9% commission on all of his sales. he wants to earn at least $6,400 next month. write an inequality and solve to show what his total sales s must be in order for oswaldo to reach his goal.

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?