What expressions are equivalent to 6- 4.5 + (-8 )

Describe a situation that you could represent with the inequality x< 17

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?

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2