A study showed that the relationship between the number of years a person smokes and the cost of their health care during their adult lifetime can be modeled by the equation y = 4000x + 400,000, where x is the number of years smoking and y is the cost of health care in dollars. Which of these statements is true according to the model?

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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?