HELPPP ME PLEASE

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

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?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?