Todd surveyed the 25 7th grade students in the art club to determine what movies 7th grade students prefer. Part A. Explain why this is not an appropriate sample to use to infer the preferences of all 7th grade students.
Part B. Describe a better sampling method.

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.