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?

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?