47. the following quadratic formula can be used to approximate the distance in feet, that it takes to stop after the brakes are applied for a car traveling on a dry road at the rate of thousands per hour: d=0.045r^2+1.1r. to the nearest foot, how far will a car travel once the brakes are applied at (a) 40 mph, (b) 55 mph, and (c) 65 mph?

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?