Plz Answer This Mathematics Question??? NEED HELP ASAP

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250