Ms. reynolds, the math teacher, was disappointed to announce that only 22% of her 68 students passed an exam. how many students failed the test?

Can someone me with these two circle theorem questions asap?

(x-5)1/2+5=2 what is a possible solution?

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?