There was a sample of 950 milligrams of a radioactive substance to start a study. Since then, the sample has decayed by 8.5% each year.
Lett be the number of years since the start of the study. Let y be the mass of the sample in milligrams.

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b. you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c. you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d. you spend $5 plus $10 per week until you have less than $45.